O.k... im running a 400, 600 n 1000 hps in an room that is 7ft high, 10ft long n 6ft wide. The room is sealed air tight with no window. Im running 2 11,000 btu portable airconditioners with temps set to 70. My room temp reads 72. 2 wall mount fans aimed at tights each fan posted up on opposite side of the room. 2 rotating fans blowing on plants to keepem dancing. A 720 cfm bolwer with carbon filter venting into my veg room. Humidity is at between 30-40%. This room is my 12/12 room. Do I need co2?