Hey all welcome..
i have a darkroom 3'11" x 3'11"..my co2 acording to the test is 900..
is this adequate or should i add co2 ???
i am not new to growing just inexperianced with co2 and such.
i can cut my ventilation off for 25 minutes at a time without the temps rising to above 86f..
so if co2 is advised what is the proper way to install... co2 burners are out of the question cause of heat humidity issues..sugaryeast complete wayste due to cost verses efficency..
so what is the most cost effective way to inject co2 with a tank..

also if i inject co2 will i have to increase the amount of nutrients i feed...

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anyone..............

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Co2 is naturally 900? Is that double regular because you're standing in that small room breathing while making the measurement?

For a (complete) tank setup:

Tank
Regulator
CO2 sensor connected to general controller
Air conditioning (if you have to vent your air all the time, you're throwing money down the drain.I know what you said about temps...but 86 isnt fantastic, if possible cool it other than with ventilation.)

You'll want to attach the tank to the ceiling/sidewall up top, with the tubing coming down to around light level, so the CO2 is dripping onto your kids.

thanks......

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................you're welcome.............

I just have a quick question. Why is the yeast/sugar method too expensive? I have priced out the Co2 equiptment on line and @ shops, and they are hella expensive! I take 20 lbs of sugar and a few bottles of yeast for a grow and with my few grows, have been producing Co2 in the 1300's. I thought that that was fairly decent.

i tried the sugar yeast thing i took 2 2 gal gas tank and the other end pooped it up and a 1/4 inch hose fits in perfect at the sugar and yrast titgten the cap put the tube ina a coup of water and it bubbles away. I stopped doing that though now i use a propane heater single burner. i don't know what ppm it is putting out but sea of grren viudeo 3 has like the same one and he said it works good. what do you think

here is the pic i leave it on 10-15 min. then ventalate to bring fresh air in. what do you think i don't know ppms but i see it is definetly helping them

Attached Images

prpane heater.jpg (59.1 KB, 45 views)

it really boils down to efficency and economy..
if you are producing ppm of co2 using sugar and yeast you will be one of the first i know..
most yeast sugar solutions only work poorly at best costing much more in the long run than co2 bottled..the basicc co2 injection kit cost 150 ,plus digi timer 15, bottle 99, fill 20..so that is 284 bottle refills are 20 , i bottle does a 8x 8 for 6 weeks of prime co2 optimization at 1500-1800..
so for the cost over 5 years you look at 1164 usd so for a year its
232usd a year wich is 38.67 per grow to add optimal co2 over a 5 year period less as time goes on..
its clean automatic no mess. and way more efficent ..
if you break it down to co2 produced it lookseven better i just couldnt find thaat formula for co2 produced by sugar/yeast..
if the co2 was turned down to 1300 wich is your range as stated it would last longer refilling once less a year so it would be 36.27 usd per grow..
plus with bottled you do not add to greenhouse gas..

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just purchased a quitecool 16 inch evaporative cooler,, and dehumidifier..a am holding off on co2 for now just building up to start a sealed grow.. no air in no air out.. just co2 injection at 1800ppm evaporative cooler to keep temps in check, dehumidifier to hold things in place...we will see but it will be ahwhile before i can put into opperation...one step at a time ehh..
jem that looks like the same concept as a co2 burner whatch out for carbon monoxide and temp spikes and it should work fine try running it above your plants for 10 minutes and keeping the vent off for 20 minutes then venting ..
gives plants time to use what you are giving them...

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