Flourscent Lites and Co2

I have read that co2 really doesn't do anything when you use a flourscent T-5. One guy said have to have it or buds aren't as dence. Anybody have any experence with this???
Thank for any reply

co2 is useful no matter what your lighting is.
plants breath co2.

yeah i think co2 will work no matter what lighting you use. but the rate of photosynthesis is greater with HPS so maybe this is why that conclusion was drawn. I dont think the two are exclusive though.

Thanks ya'll. Thats kinda what I thought. But wasn't sure.

adding CO2 is like turbocharging or supercharging an engine. if you increase one component of the mix....it is important to also make best efforts to increase the others...i.e., th plant's appetite for light (energy) water and nutes will also all increase by intaking more CO2 the plant will require more of the other constituents to max. the value of the added CO2 - good luck man!

yeah basically with these HID lights the CO2 is the limiting agent for photosynthesis so by increasing this it is brought up to optimum levels for growth. like a huge engine (HID) and preium gas (nutes) with shitty tires (co2) will mean it can only go so fast and handle so well. need to throw some D's on that bitch!

MagusALL said:

yeah basically with these HID lights the CO2 is the limiting agent for photosynthesis so by increasing this it is brought up to optimum levels for growth. like a huge engine (HID) and preium gas (nutes) with shitty tires (co2) will mean it can only go so fast and handle so well. need to throw some D's on that bitch!

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I using flourscent t-5. What D's????

unless you have a sealed room, co2 is pretty much a waste of money/time. it's heavier than air so it must be released from above, so you can't have any fans blowing. the temps have to be in a certain range too, in order for the stomata to open further, enabling the plant to take in the increased co2 levels. i believe it's in the mid 80's somewhere, not exactly sure. i never use co2, just good air exchange. just adding co2, w/o meeting all the requirements, makes it pretty much useless.

yea man....it is a complex system that can generate a benefit from additional CO2....the other variables have to be upped to meet with the extra demand the plant puts out if it can use it....and the dynamiccs of the airflow is totally important too.....

Growbot said:

unless you have a sealed room, co2 is pretty much a waste of money/time. it's heavier than air so it must be released from above, so you can't have any fans blowing. the temps have to be in a certain range too, in order for the stomata to open further, enabling the plant to take in the increased co2 levels. i believe it's in the mid 80's somewhere, not exactly sure. i never use co2, just good air exchange. just adding co2, w/o meeting all the requirements, makes it pretty much useless.

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im pretty sure the stoma only have to do with the exchange of water from the plant into the atmosphere. "D's" my dude, are some big rims if ya didnt get my comparison. yeah i never understood how you could maintain high co2 levels without having a large grow room. you obviously need to exhaust the room to get the o2 out so with that it would suck out the co2 unless you had the exhaust at the top of the room and somehow didnt suck out the co2. the only way i see co2 supplementation working is if you turned off the exhaust fans and ran the co2 generator for a few hours whiloe running only the circulating fans inside.

yea throw some d's on that bitch

magusall got it all summed up pretty much... guy u talked to was right... if you dont have the right lights to help the plants use the extra co2 u put in there then the co2 jus sits and does nothing... but it couldn't hurt the plant with the extra co2 ...so its a win win kind of situation

here's some good info. on co2 and basic plant mechanics concerning stomatas and their function.
http://www.icmag.com/ic/showthread.php?t=76868&highlight=stomata

i tried to post a link but it wouldn't work. here's some good info. on co2/plant mechanics.

Carbon Dioxide Enrichment Methods
By Roger H. Thayer, Eco Enterprises

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 like nitrogen, 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 daylight hours. They give off oxygen at the same time, the results of a process called 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 needóa truly symbiotic relationship. In ancient times, millions of years ago, when there was only plant life on the earth and no animal life, the atmosphere was 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 greenhouse effect.. The more CO2 there is in the atmosphere, the higher the planet's 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.

I use C02 with my t-5 setup and I think it helps close the gap between a t-5 setup and a HPS setup of equal wattage. It works so use it!

I believe that its the lights that establishes and buds density. Dude Co2 will benefit your plants no matter what.

I use co2 tank injections and co2 generators.Its not real difficult but has to be planned out. Gro your kinda off though.as you want a fan on inside always to circulate the co2 inside the grow area.I use tilting fans on the floor blowing up on low.That sucks the fallen co2 from down low and recirculates it around your plants.I do my injection then very 2nd hour 3 minutes before a fresh co2 injection I have my exhuast and inlet fans kick on for 3 minutes then they shut off and the dampers fall closed closeing the vents. I got the stale air out fresh air in and new co2 filling the room.You need timers tanks,hoses,dampers,fans,co2 level monitors and solenoids for most injection setups.With generators you need a timer,propane tank or natural gas hook up, and then your standard fans and dampers.Temps for co2 are bests around 80-85 F. Co2 works great with T5 lamps.My buddy owns a hydro store and uses co2 tanks in the 4x8 grow huts with T5s with awesome reults.Keep ppm levels at least 1200 ppm in the grow are to get results or your actually not doing too much to help. Done right yields can increase up to 80% and decrease grow times by 2 or more weeks.

Thanks for the excellent article, growbot, but it left something out. CO2 does comprise 0.03% (300 ppm) of our atmosphere, but maximum CO2 absorption by cannabis is 0.2%, or roughly six and a half times current atmospheric limitations. All CO2 sources have a by-product rating. One pound of kerosene burned provides 3.2 pounds of CO2 (that's off the top of my head and might be a little off). Take the amount CO2 by-product from a given amount (i.e. from a CO2 tank), figure your grow space cubed (3'x6'x9'), then divide the amount of CO2 it would take to increase the atmospheric content from 0.03% to 0.2%. The volume of 3x6x9 will be 162' cubed. Than means you need roughly 32.4 cubic feet of CO2 to maximize plants absorption through the stomata (small pores in the leaf). Divide 32.4 by the flow rate (i.e. 1 cubic/ft per minute) and shut off the valve at 32 minutes. Regulate your CO2 source, maintain careful ventilation, and you'll will see your plants triple in growth rate and double in yield.

Or, if you're broke, like me, spray seltzer water on the leaves directly, making sure not to touch the hot lamp surface. The CO2 is released and plants will love it! do this twice daily, but modify your watering system as transpiration is decreased substantially. Don't do it during flowering, especially the last two weeks. CO2 use is decreased quite a bit and the extra moisture just invites mold.

my co2 system is automatic....uses a regulator, 20lb bottle (last 5-6 weeks) and computerized monitoring.....keeeps CO2 levels at 1600ppm constant....seems to make a difference in the health of the plants....

tahoe58 said:

my co2 system is automatic....uses a regulator, 20lb bottle (last 5-6 weeks) and computerized monitoring.....keeeps CO2 levels at 1600ppm constant....seems to make a difference in the health of the plants....

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how much would the whole entire system not including Co2 cost a feller?