How high of a temp with CO2?

I know 105*F is about 30*F too hot to grow in, but read on here that temps don't matter when using CO2. It seems like 105* would be too hot either way, isn't it? What is the max temp for growing when using CO2?


Also, what is the lowest possible temp for growing with and without CO2?

I think 95 is about tops

Temp still matters. Co2 just allows the plant to tolerate higher temps. I would still try too keep the temps around 78 or lower. My dwc res stays around 65 and I haven't noticed any stunting of growth so I imagine the ambient air temp could stand to be around the low sixties without problems.

If you are using co2 , you still need to stay at about 85 degrees.