CO2 and Marijuana Plants _ the Weed Blog

8/16/2019 CO2 and Marijuana Plants _ the Weed Blog

1/23

MARIJUANA NEWS AND INFORMATION

How To Make Hemp

Milk

Michael Phelps Marijuana Strain

Pictures

Posted by Johnny Green at

1:42 PM on February 29, 2012

Growing Marijuana

CO2 And MarijuanaPlants

Share on Facebook Share on Twitter

Share on Google+

Links

Pass Your Drug Test

Best Vape Pen and Wax Pen Store

Vaporizer Pens And Dry Herb Vaporizers

Seed Supreme

Buy a Dab Rig

Buy Cannabis Seeds

Pass A Drug Test For Weed

Cannabis Seeds

Funkypiece Headshop

2015 STASH Award Winner-Best Grow

Light

Take the Guessing Out of Your JAR!Best LED Grow Lights Reviews

The Weed Blog Law Activism Advertise About

Marijuana Books Marijuana Testing Growing Marijuana Marijuana Recipes

Strain Reviews

2 And Marijuana Plants | The Weed Blog http://www.theweedblog.com/co2-and-marijuana-plants/

23 12/02/2016 14:52


2/23

How To Use CO2 WhenGrowing Marijuana

At some point in your marijuana growing

career, you will have a desire to incorporate

CO2 into your recipe. Chances are, that is

why you are reading this article. I have

grown marijuana for a long time, and I know

first hand that there is a lot of junk

information out there on the web in regards

to marijuana plants and CO2. Below is

some great information that I found on some

of our partner sites that I wish I had when I

first started growing marijuana:

By Dr. Who

Humans breathe in oxygen (O) and breathe

out carbon dioxide (CO2). Plants do the

reverse. They “breathe in” CO2 and

“breathe out” oxygen (O). This is why plant

life is an essential part of the worlds’ecosystem. Without plants, CO2 levels

would rise to intolerable levels. Plants use

CO2 for growth. It is the essential building

block for photosynthesis (along with light

and water). Plants cannot grow without

CO2. The current levels in the atmosphere

are about 350 parts per million (PPM). It is

theorized that millions of years ago, levels ofCO2 were about 1,500 PPM. Throughout

the years, plants have evolved in many

ways-and in many ways have stayed the

same. Knowing this can be advantageous

for us all.

It seems that plants have not lost the ability

to use up to 1,500 PPM of CO2. Plantgrowth can be accelerated by increasing the

CO2 levels in your growing area.

Sections

Ending Marijuana Prohibition

Global Drug WarGrowing Marijuana

Marijuana Business News

Marijuana Entertainment

Marijuana Products

Marijuana Recipes

Marijuana Science

Marijuana Strain Reviews

Medical Marijuana Policy

Marijuana Testing

The Weed Blog Mobile

Daily E-Mail Updates

Search The Weed Blog


23 12/02/2016 14:52


3/23

Conversely, CO2 levels below 250 PPM

have a detrimental effect on your plants. If

you have six plants growing in your closet,

and there is no ventilation, your plants can

use the CO2 in a few hours. They then stop

growing. You must, at a minimum, provide

fresh air for your plants every hour or so. An

even better way is to provide supplemental

CO2 for your plants by using either a CO2

generator or bottled CO2. Any of these

solutions will keep your plants growing at

optimal rates. It has been proven that you

can increase your growth rates by up to 20

percent and size by up to 30 percent byproviding supplemental CO2 at levels over

1,200 PPM. You should never go over 1,500

PPM, as this soon becomes toxic for the

plants, and they tend to grow very stringy.

CO2 generators are simply specialized

burners that burn either propane or natural

gas to produce CO2. A byproduct of thisprocess is water, in the form of humidity.

When using a generator, it is a good idea to

keep an eye on your humidity levels. CO2

generators are optimized to produce as little

heat as possible, while producing as much

CO2 as possible. They are normally rated in

cubic feet per hour (CFH). A standard

10-foot-by-10-foot-by-8-foot room containing350 PPM takes about 1 CFH to raise the

levels to 1,500 PPM. The level will drop

throughout the day, requiring smaller burns

to keep the levels constant. A CO2 PPM

controller works great for keeping your

levels constant with a CO2 generator.

Bottled CO2 can be obtained at mosthydroponic or welding stores. You need a

regulator/flow meter to get the CO2 out of


23 12/02/2016 14:52


4/23


5/23

Here is a GREAT forum post I found at

StonerForums.Com by

immacannaclubmember:

Carbon Dioxide Enrichment Methods …..

CARBON DIOXIDE (CO2)

Carbon dioxide is an odorless gas and a

minor constituent of the air we breathe. It

comprises only .03 % (300 parts per million,

or PPM) of the atmosphere but is vitally

important to all life on this planet!

Plants are made up of about 80-90 %

carbon and water with other elements likenitrogen, calcium, magnesium, potassium,

phosphorous and trace elements making up

only a small percentage. Almost all of the

carbon in plants comes from this minor 300

PPM of carbon dioxide in the air.

Plants take in CO through pores, called

stomata, in their leaves during daylighthours. They give off oxygen at the same

time, the results of a process called


23 12/02/2016 14:52


6/23

photosynthesis. This oxygen that they give

off is used by humans and all animal and

marine life on this planet. Without it, animal

and human life would not be possible.

Oxygen comprises almost 20 % of the

earth’s atmosphere. Most of it was

generated by plant life. The process of

photosynthesis combines CO2 and water to

form sugars and free oxygen. Simple sugars

like C6H12O6 provide plants with energy

and are formed into the more complex plant

parts such as carbohydrates, amino acids,

protein, cellulose, leaves, roots, branches

and flowers.

People and animals breathe in oxygen

generated by plants and breathe out the

CO2 that the plants needÃ³a truly symbiotic

relationship. In ancient times, millions of

years ago, when there was only plant life on

the earth and no animal life, the atmospherewas quite different. There was much more

volcanic activity, one of nature’s sources of

CO2, and the air contained three to four

times as much of it than now. Plants thrived.

Giant tree ferns reigned supreme and much

of our coal, gas and oil deposits were

created by them during that long-ago time.

Plants would benefit from more CO2 in the

air today, and actually are benefitting as we

burn more fuels, one by-product being

carbon dioxide. CO2 in the air has increased

from 270 PPM to over 300 PPM, more than

an 11% increase, in just the last 40 years!

This has also worried many scientists

because of what is called the greenhouseeffect.. The more CO2 there is in the

atmosphere, the higher the planet’s


23 12/02/2016 14:52


7/23

temperature will go. Too much warming of

the planet can melt ice caps, flood coastal

cities, spread deserts and famine and

drastically change the climate. This effect is

somewhat self-regulating however. The

oceans absorb a great deal of CO2 giving

algae and plankton, 90% of the plant matter

on earth, more CO2 to grow on and giving

the rest of the plant matter on land more

also. This decreases the amount of CO2 in

the atmosphere, thereby regulating it.

Scientists are just now learning to

understand the self-regulating systems that

stabilize most factors in our environment.

CO2 ENRICHMENT

Biologists and plant physiologists have long

recognized the benefits of higher CO2

content in the air for plant growth.

Horticulturists and greenhouse growers

have used CO generators to enhancegrowth rates on plants for many years with

good results.

With the advent of home greenhouses and

indoor growing under artificial lights and the

developments in hydroponics in recent

years, the need for CO2 generation has

drastically increased. Plants growing in asealed greenhouse or indoor grow room will

often deplete the available CO2 and stop

growing. The following graph will show what

depletion and enrichment does to plant

growth:


23 12/02/2016 14:52


8/23

Below 200 PPM, plants do not have enough

CO2 to carry on the photosynthesis process

and essentially stop growing. Because 300

PPM is the atmospheric CO content, this

amount is chosen as the 100% growth

point. You can see from the chart that

increased CO can double or more the

growth rate on most normal plants. Above

2,000 PPM, CO2 starts to become toxic to

plants and above 4,000 PPM it becomes

toxic to people.

With the advent of ideal growing conditions

conditions provided by metal high-intensity

discharge (H.I.D.) lighting systems,

hydroponics, environmental controls such

as temp., humidity, etc. and complete,

balanced plant nutrients such as Ecogrow,

the limiting factor on plant growth rate,

quality, size and time to maturity becomes

the amount of carbon dioxide available to

the plants.

There are five common methods of

generating extra amounts of CO2:

1. Burning hydrocarbon fuels

2. Compressed, bottled CO2

3. Dry ice

4. Fermentation

5. Decomposition of organic matter

We will discuss these five methods briefly in

turn. In order to make an effective

comparison of CO2 generation, benefits and

drawbacks, a std. 8′ X 8′ X 8′ or 512 cu. ft.

growing area will be used.


23 12/02/2016 14:52


9/23

1. BURNING HYDROCARBON FUELS:

This has been the most common method of

CO2 enrichment for many years. A number

of commercial growers and greenhouses

use it in their larger structures. The most

common fuels are propane, butane, alcohol

and natural gas. Any of these fuels that

burn with a blue, white or colorless flame

will produce carbon dioxide, which is

beneficial. If a red, orange or yellow flame is

present, carbon monoxide is being

generated due to incomplete combustion.

Carbon monoxide is deadly to both plants

and people in any but the smallest

quantities. Fuels containing sulfur or sulfur

compounds should not be used, as they

produce by-products which are harmful.

Most commercial CO2 generators that burn

these fuels are too large for small

greenhouse or indoor grow roomapplications. Some small ones are avai

fable or a Coleman lantern, bunsen burner

or small gas stove can be used. All of these

CO2 generators produce heat as a

by-product of CO2 generation, which is

rarely needed in a controlled environment

grow room but may prove beneficial in

winter growing and cool area greenhouses.

The rate of CO2 production is controlled by

the rate at which fuel is being burned. In a

gas burning CO2 generator using propane,

butane or natural gas, one pound of fuel

produces approximately 3 pounds of carbon

dioxide gas and about 1.5 pounds of water

vapor. Approximately 22,000 BTUs of heat isalso added. These figures can vary if other

fuels are used.


23 12/02/2016 14:52


10/23

To relate this to our standard example in an

8′ X 8′ X 8′ growing area, if you used ethyl

or methyl alcohol in a gas lamp or burner at

the rate of 1.3 oz. per day, we would

enhance the atmospheric concentration of

CO2 to 1300 PPM if the room was

completely sealed.

An enrichment standard of 1300 PPM was

chosen as it is assumed that 1500 PPM is

ideal, and that the plants will deplete the

available CO2 supply by 100 PPM per hour.

Remember, the normal atmosphere

contains 300 PPM of CO2. A 100% air

exchange (leakage) every two hours is

assumed to be the average air exchange

rate in most grow rooms and tight

greenhouses. If many cracks and leaks are

present, this exchange rate will increase

significantly, but added CO2 (above 300

PPM) will also be lost. If a vent fan is in use,

disregard CO enrichment, as it will be blownout as fast as it is generated.

A circulation fan is beneficial, as it moves

the air about in the greenhouse or grow

room. If the air is still, it can cause a

“depletion layer effect”. This effect causes

the CO2 right next to the plant leaf to be

quickly depleted. If fresh air carryingadditional CO is not brought to this surface,

photosynthesis and growth will diminish and

eventually cease.

There are a number of factors involved in

keeping the CO2 content at the desired

concentration level. 1. If the greenhouse or

grow room is not tightly sealed up, add upto 50% to the CO2 generator production

volume. 2. If temperature is increased fiom


f 23 12/02/2016 14:52


11/23

70 F to 90 F, add 20% to the volume

generated, and vice-versa. 3. If the grow

area contains large or tightly spaced plants,

add 20% to 30% to the CO2 volume

generated.

If more light is used, more CO2 can be

utilized and should be produced

proportionately up to the practical limit of

5,000 footcandles per square yard and 1500

PPM CO2 atm. content. When more CO is

generated, more water and plant nutrients

should be used, again to a practical limit of

2X normal. lf your plants are going to grow

faster because of CO2 enrichment, they will

need more nutrient and water.

The last factor to consider in maintaining a

set CO2 level is the size of your growing

area. This is simply done for gas burning

and following methods by setting up a

mathematical ratio. In our “standard” room(8′ X 8′ X 8′ ), we have 512 cubic feet. If your

growing area measures 10′ X 10′ X 20′ , you

have 2,000 cubic feet of volume to contend

with. If you want to use the ethyl

alcohol/gas-lamp enrichment method, set

up the ratio using l.3 oz. by weight of

alcohol per day gives:

1.3 oz./day = 512 cu. ft. ——————

——————- X oz./day = 2,000 cu. ft. Then

cross multiply: 512 X = 1.3 X 2,000. Dividing

both sides by 512 gives you X = (1.3 X

2000)/512, solve for X. X = 5 oz.

You need 5 oz. of ethyl alcohol per day in a

10′ X 10

′ X 20

′ grow area to generate the

same amount (1300 PPM) of CO2 as in a

512 cu. ft. room.


f 23 12/02/2016 14:52


12/23

To generate 1500 PPM above the available

CO2 (200 PPM) in the same size area, set

up the ratio:

1300 PPM = 5 ounces

————– ————

1500 PPM = X

X = (5 X 1500)/1300 = 5.77 ounces.

NOTE: One pound of CO is equivalent to

approximately 8.7 cu. ft. of gas at standard

temperature and pressure.

If different hydrocarbon fuels are used, the

heat content, in terms of B.T.U. should be

taken into account. If the BTU per hour rate

is half that of ethyl alcohol, twice as much

must be burned to generate the same

approximate amount of CO2 desired. The

amount of CO2 generated depends on the

carbon content of the fuel being used. The

BTU per hour heat content can be obtained

from literature or suppliers.

2. COMPRESSED, BOTTLED CO2:

This is the second most popular method of

CO2 enrichment and provides fairly

accurate, controlled results. Compressed

CO2 comes in metal containers under high

pressure. Small cylinders contain 20 lbs. of

compressed CO and large tanks hold 50

lbs. Pressure ranges from 1600 pounds per

square inch to 2200 PSI.

To enrich available CO with compressed

gas, the following equipment is needed:

1. Tank of compressed CO2


f 23 12/02/2016 14:52


13/23

2. Pressure regulator

3. Flow meter

4. Solenoid valve, (plastic or metal)

5. Short-interval 24 hr. timer capable of

having an “on time” variable from one to 20

minutes.

6. Connecting tubing, fittings and adapters

PRESSURIZED CO2 ENRICHMENT

SYSTEM ARRANGEMENT

This method allows for the injection of a

controlled amount of CO2 into the growing

area at a given interval of time. The

pressure regulator reduces the compressed

gas pressure from 2200 lbs./square inch to

a more controllable amount (100 to 200 PSI)

which the flow meter can handle. The flow

meter will deliver so many cubic feet per

minute of CO2 to the plants for the duration

of time that the solenoid valve is opened.

The timer controls the time of day and

length of time that the solenoid valve is

open.

To operate this CO enrichment system in

our standard 8′ X 8′ X 8′ grow room area, we

want to add enough CO to increase the

near depleted level of 200 PPM to 1500

PPM. We must then add 1300 PPM of CO2

to a volume of 512 cu. ft. We would like to

do this in intervals of time relative to the

natural air exchange rate (leakage rate) to

keep the CO level near the 1500 PPMrange.

Let’s select an injection time interval (CO2


f 23 12/02/2016 14:52


14/23

enrichment time) of every two hours. First,

we must determine how many cubic feet of

CO2 must be added to 512 cu. ft. of volume

to increase our 200 PPM to 1500 PPM. To

do this, multiply the room volume of 512 cu.

ft. by .0013 (1300 PPM) to obtain 0.66 cu. ft.

of CO2 that is needed. Set the regulator at

100 PSI and the flow meter at 20 CFH

(Cubic Feet per Hour) or 0.33 cubic feet per

minute.

If we set our timer to stay on for two minutes

every two hours, we will get the 0.66 cubic

feet of additional CO we need to bring the

CO level to the 1500 PPM optimum level

needed.

Each pound of CO compressed gas

contains approximately 8.7 cubic feet of CO

gas at atmospheric pressure.

Compressed CO2 costs around 50 cents/lb.

at most supply houses. At that rate of 0.66

cu. ft. every two hours for 18 hours per day,

this method will cost around 30 cents per

day to operate. The timer should be set to

deliver CO2 during the “on time” (daylight

time) for which the lights are set. This is the

only time the plants can use CO2; they do

not use it when it’s dark.

The compressed gas method of CO

enrichment has the advantages of fairly

precise control, readily available equipment

($150.00 to $300.00 average cost for an

installation) and it does not add extra heat

to the growing area. It also works well for

small growing spaces and after initialequipment costs, is not expensive to

operate.


f 23 12/02/2016 14:52


15/23

3. DRY ICE METROD OF CO2

ENRICHMENT:

This method works well for small areas,

especially if some cooling effect is desired.

Dry ice, solid carbon dioxide, is very

coldÃ³about 109 degrees F below zeroÃ³so

we suggest you handle it with gloves. Dry

ice is available through freezer and meat

packing outlets and is relatively inexpensive.

In our std. 8′ X 8′ X 8′ room, you would need

about 0.8 lbs. of dry ice per day to raise the

atmospheric CO2 content to 1300 parts per

million. If the growing area is quite warm,0.8 lbs. can melt much faster than 18 hours.

Two methods can be used to regulate this.

One is to cut just small pieces, about .1 lb.,

and add a new piece every two hours to the

growing area. The second method is to put

the required amount in an insulated

styrofoam box with a few small holes cut in

it. This will slow the rate of meltingconsiderably but must be “tuned in” to get it

just right so 0.8 lbs. melts in the 18 hours of

light “on” time. Extra dry ice must be kept in

a freezer to prevent loss due to evaporation.

Since CO2 is heavier than air, one good

method of distributing it to the plants is to

attach the container or dry ice to the lightreflectors which are normally placed over

the plants. The CO2 will then flow down

through or over the lights and evenly bathe

the plants. If a circulation fan is used, the

dry ice or its container should be placed

directly in front or behind it for even

distribution. Common to all CO2 enrichment

methods, try to seal up the room orgreenhouse as best you can, especially

around the bottoms of doors and walls.


f 23 12/02/2016 14:52


16/23

The dry-ice method will cost around 60

cents per day for our standard sized, 512

cu. ft. grow room. A possible benefit of

using dry ice is the cooling effect it

produces.

4. FERMENTATION METHOD OF CO2

ENRICHMENT:

Sugar is converted into ethyl alcohol and

CO2 when it ferments due to the action of

yeast. In this method, the following

ingredients and equipment are needed:

1. Suitably sized container, plastic or glass

2. Sugar, common or invert

3. Yeast, brewers or bourgelais wine yeast

4. Yeast nutrient

5. Sealant, cellophane, tape or lid

6. 1/4 plastic tubin

7. 1/4 shutoff valve

8. Balloon

9. Starter jar or bottle

A pound of sugar will ferment into

approximately half a pound of ethyl alcohol

(C2H5OH) and half a pound of CO2. One

pound of CO2 makes 8.7 cubic feet of CO2

gas at normal atmospheric conditions. In

our standard 8 X 8′ X 8′ grow room, you will

need to generate 512 cu. ft. X .0013 (1300

PPM CO2) = 0.66 cubic feet of CO2 every

four hours. It takes time for the yeast to


f 23 12/02/2016 14:52


17/23

ferment sugar, so the size of container you

should use in determined by dividing the

cubic feet of growing area (512 Cu. ft.) by

32 = 16 gallons.

A convenient container to use here would

be a plastic kitchen garbage can. These are

inexpensive and easily obtainable.

To determine how much sugar we need for

six weeks of operation or until fermentation

ceases, the following calculations are

necessary: From the above paragraph, we

need 0.66 cu. ft. of CO2 every four hours. If

one pound of CO2 makes 8.7 cu. ft. of CO2,

we will need 0.08 lbs. of sugar, but because

every one pound of sugar only makes 1/2

lb. of CO2, we must double the amount of

sugar needed, i.e. 0.08 X 2 = 0.16 lbs. of

sugar every four hours. Since there are six

four-hour periods in a 24 hour day, the

amount of sugar we need is 0.16 x 6 or 0.96lbs. of sugar per day.

If we round this off to one pound of sugar

per day, we will need 42 lbs. of sugar in six

weeks. We must consider that only 80 to

90% of the sugar will be completely

converted in this length of time, therefore,

we should actually use about 48 lbs. ofsugar in six weeks.

The sugar solution to start with is 2 1/2 to 3

lbs. per gallon. You can use hot water to

start with, as sugar dissolves faster in it than

in cold water. You must let it cool to 80-90

degrees F before adding yeast to it or the

yeast will be killed. Start with the fermentingcontainer only half-full as you will be adding

an extra gallon per week for 6 weeks. Begin


f 23 12/02/2016 14:52


18/23

with eight gallons per week and 24 lbs. of

sugar.

To start the solution fermenting, you will

want to make a “starter batch” of sugar

water, yeast and yeast nutrient. To do this,

use a coke or beer bottle (approx. one pint),

dissolve 1/4 lb. of sugar in 10 oz. of warm

water (approx. 3/4 full), add a pinch of yeast

and two pinches of yeast nutrient to this

sugar mixture. Place a balloon on the bottle

and set in warm location, 80 to 90 degrees

F, for one to two days or until the balloon

expands and small bubbles are visible in

the solution.

After the starter solution has begun

fermenting vigorously, it is added to the

main fermentation tank at the same

temperature already mentioned. After a day

or so, to see that the system is working

properly and that CO2 is being generated,close the valve to the supply tube and, if the

unit is sealed properly, the balloon should

expand in a short period of time. To regulate

the amount of CO2 being delivered to the

plants, open the valve until the balloon is

only half the size of full expansion.

The CO2 supply tube with in-line valveshould have a 2″ loop in it half full of water

to serve as an air-lock. This loop can be

held in place with tape on the side of the

fermentation tank. The open end of this

tube can either be positioned in front of a

circulating fan or run through “T” fittings to

make additional tubes, the ends of which

can be positioned above your plants.Remember, CO2 is heavier than air and it

will flow downwards.


f 23 12/02/2016 14:52


19/23

Once per week, undo a corner of the Saran

Wrap and add an extra gallon of sugar

solution and yeast nutrient, then reseal the

top with tape. Use three lbs. of sugar and

one teaspoon of nutrient per gallon.

After the last gallon is added, after six

weeks of operation, let fermentation

continue until the balloon goes down and

no more bubbles are visible in the “U” tube.

When this point has been reached, taste

the solution. If is it sweet, fermentation is

not complete and a new starter batch

should be made and added to the tank.

More yeast nutrient should also be used. If

the solution is dry (not sweet) like wine,

fermentation has stopped and the alcohol

content has killed the yeast. At this point,

it’s time to clean your tank and start a new

batch.

The fermentation process is quite good forgenerating CO2 and relatively inexpensive.

Regular or invert (corn) sugar is inexpensive

and available. You may have to purchase

invert sugar at a wine supply store. This

method of generating CO2 will cost

approximately 50 to 60 cents per day.

To save money on extra yeast, you caneither take out approximately a gallon of

fermenting liquid and save for the next

batch, or start a second system identical to

the first and alternate themÃ³clean and

replenish one, then three weeks later, clean

and replenish the second.

5. DECOMPOSITION PROCESS OFGENERATING CO2:


f 23 12/02/2016 14:52


20/23

When organic matter decomposes due to

bacterial action, carbon dioxide is

generated. Plants grow lush and vigorously

on a tropical jungle floor as a result of this

natural decay of dead plant and animal

matter. This can increase the available CO2

content from the normal 300 PPM amount to

over 1,000 parts per million. This can also

be done indoors, for little cost, but is

odorous and unsanitary. For these and

other reasons, it is not highly

recommended. The sterile conditions of a

well-set-up hydroponic grow room or

greenhouse could be disrupted and adversebacteria, bugs and disease induced with

detrimental effects on your plants.

In conclusion, all these methods will work if

done properly and CO2 enrichment is a very

beneficial addition to your greenhouse or

grow room systems. Some are more

practical than others, some less expensiveand some require more time and attention.

All chemical reactions are temperature

dependent and photosynthesis is no

exception. With CO2 enrichment, a higher

temperature, up to 100 degrees F, can be

used, more light may be needed as it is

required for the photosynthetic reaction to

take place. More water and nutrients willalso be required, and a machete may be

necessary to control the added, sometimes

startling extra growth rates possible on most

plants by using CO2 enrichment!

Eco Enterprises sells the following CO2

enrichment equipment:

Bottled (compressed gas) CO

controller system, comes with

1.


f 23 12/02/2016 14:52


21/23

About Johnny Green

Johnny Green is a marijuana activist from Oregon. He

has a Bachelor's Degree in Public Policy. Follow Johnny Green on Facebook and Twitter . Also, feel free to email

any concerns.

Dissenting opinions are welcome,insults and personal attacks are

discouraged and hate speech will not be tolerated. Spammers and

people trying to buy or sell cannabis or any drugs will be banned. Read

our comment policy and FAQ for more information

regulator and flow meter, timer,

solenoid valve, tubing, balloon fittings

and instructions. Price – $199.50

CO2 fermentation kit, comes with

nutrient, yeast, tubing, valve and

instructions. Price – $17.50

2.

CONTACT:

Eco Enterprises

2821 N.E. 55th St.

Seattle, Wa. 98105

Tel. 1-800-426-6937

(In WA 206-523-9300)

Print


f 23 12/02/2016 14:52


22/23

Comments for this thread are now

closed.

Comments 1

•

831Dank •

Does anyone know about introducingCO2 to a perpetual garden. Ive heardcannabis plants after 6 weeks don'tneed CO2?

•

Chris •

Is there a special hose for distributing

the co 2 over the plant

•

bryce•

1/4" irrigation soaker hose.plugged at the end!

•

ak47 •

i cant fin the equipment anywhereplease help asap!

•

ak47 •

how can i control the heat and thehumidity in a sealed room running 4600w lights?? can find the rightequipment or advice any where,

please help??

•

chicken •

jk

•

chicken •

dumb

Finlinea •

It is good article on relationship ofCO2 And Mari uana Plants It ex lained


f 23 12/02/2016 14:52

Documents

CO2 and Marijuana Plants _ the Weed Blog