My co2 is dispersed into the air from a tank via a controller and regulator. When I exhaust my heat I also exhaust my co2 (waste of gas).I try to keep that down to a minimum. I am using ledā??s for lighting so I donā??t have much heat being generated there. My room is a sealed environment. Most of my heat comes from my dehumidifier, water pump and fans. I know my air temp is ok, I am more concerned with my water temp. is 76deg going to cause me problems with my roots, nutrient solution and overall plant health?