The Co2 is on only when the lights are on. The Co2 burner i use has a glow plug not a pilot light. You never want Co2 on when the lights are off. A pilot light on when the lights are off is even a bad idea.

I have 2 or 3 circulating fans for each room. They run 24/7.

My temps are 85 when my lights are on and 75 when the lights are off. I use a temp stat for that. In the last 2 weeks i drop my temps to 65 with the lights off and as low as I can with the lights off. I allso turn my lights off for the last 4 days. This helps to get rid of red hairs and make my buds more lime green.

I dont adjust my temp in my water at all. I keep my res on small pieces of 2x4 so the cold floor in the winter doesnt drop the water temp.

I keep my shaders about 22 inches from the tops of my plants. The shaders I use are so good that any closer will start to burn the tops.

Hope that answers your questions.

Quote Originally Posted by axel
Tranoble,

A couple of questions for you if you dont mind..

can you tell us how long the co2 gos on for each day. does it still go on and off during the dark cycle?

how many circulating fans do you have going in there. do they run at night also?

do you let the temp fall below 85 during the night cycle? do you need a heater to keep the temperature above this level

do you use a thermostat and humidistat. if so what are the settings set to?

do you adjust the temperature of your reservoir at all?

how far above the plants do you keep the lights?

Thanks. Really neat work..