Quote Originally Posted by JeffersonBud
There are Co2 auto calculators online. just search google for one. My room is 4x8x6 is sealed. My co2 runs at 1 bar for 13 minutes to reach 1500 ppms( the air already has 300 ppms of co2 so you need to calculate for 1200). I add another 2 minutes just to make sure it hits that 1500 mark. It fires every 3 hours when the lights are on.

how many bars does your regulator go to? if it is 1 like mine then you will need more then 13 minutes because your room is much larger.
Thanks for the info Jefferson you da man.
razzapiggy Reviewed by razzapiggy on . c02 light cycle questions About to implement co2 into my room with a regular - I prefer to not burn the gas in the extra bedroom. I tested out what my temps when all exhaust\air cooling ventilation is off and it took over 30 minutes to rise over 85. Right now I am vegging and the lights are off from 1PM to 8PM. I want to switch it to them being off from noon to eight instead...does switching their light cycle by an hour during veg stress them at all? I've done it in the past with no problems but I'm curious about Rating: 5