the same temp you have your plants at, between 20 - 25 degrees Celcius, ideal growing conditions. make sure you turn the fans off and there is now air blowing in the room or on the plants being fed CO2
BONG0 Reviewed by BONG0 on . co2 :greenthumb:1. What is the ideal temp to start using co2? 2. I planon getting these http://www.bghydro.com/BGH/itemdesc.asp?ic=ACO2EF&eq=&Tp=. I could apply them like twice a week. Every day would be getting expensive for me. Would it be worth the time and money to get these only using twice a week in your opinion? Any feedback is cool. Rating: 5