CO2 How big a bottle, how long they last ??

[mrsgreenbuds]

My room is approx 11x9x9ft sealed. Obviously there is variances that prevent exact data, but peoples usual calculations, experiences etc would be appreciated..

 

[sixstring]

well it depends on how well the room is sealed and how many plants are using up the co2 but with a flow meter setting of 5cfm you will need 13 mins run time to get to 1500ppm and a 20# tank will last for 35 hours at that rate.so if you ran co2 4 x a day multiply x 13 mins =56 mins I think so the tank would last 36 to 37 days roughly. here is a great calculator for bottled and propane,just punch in your numbers.peace
http://www.hydroponics.net/learn/co2_calculator.asp

 

[mrsgreenbuds]

Thanks, I have a Climate controller, will that prolong the bottles life ?

 

[Woj]

so you dont have a sniffer? You are best off with a sniffer & To be honest with you, the water cooled co2 gens are almost as cheap as a bottle and regulator setup and run off propane so you can get a 50lb bottle that will last a whole run. The water cooling eliminates the need for more AC typically associated with a co2 gen. I got into mine with the ice cap on top for $390 or so with the control valve. I have growtronix controlling the whole thing so i had a sniffer before i got The gen. Everyone i know who runs co2 bottles winds up with multiple days where they are too lazy / busy to go fill it & are running unenriched (i know i spent the money to keep my co2 solid @ 1500 ppm while the lights are on).. Especially cuz you cant just run to the 7-11 down the road at 3am when you realize the bitch is empty.

 

[sixstring]

Thanks, I have a Climate controller, will that prolong the bottles life ?

The controller will typically use more co2 because it maintains a constant ppm.i use a simple timer and over shoot to 1600 or so and let it drift down for 2 hour's and then vent room and repeat.

 

[sixstring]

so you dont have a sniffer? You are best off with a sniffer & To be honest with you, the water cooled co2 gens are almost as cheap as a bottle and regulator setup and run off propane so you can get a 50lb bottle that will last a whole run. The water cooling eliminates the need for more AC typically associated with a co2 gen. I got into mine with the ice cap on top for $390 or so with the control valve. I have growtronix controlling the whole thing so i had a sniffer before i got The gen. Everyone i know who runs co2 bottles winds up with multiple days where they are too lazy / busy to go fill it & are running unenriched (i know i spent the money to keep my co2 solid @ 1500 ppm while the lights are on).. Especially cuz you cant just run to the 7-11 down the road at 3am when you realize the bitch is empty.

Propane is more easy to find and has more excuses for why you need it to lol.but I recommend you always have 2 tanks either way you go, so no down time.

 

[Woj]

but I recommend you always have 2 tanks either way you go, so no down time.

Best advice anyone could give you regarding Co2