I've got a 1.2m square tent wiv a 600hps dimed to 400w as my plants are only 3 day old. I've got 2 clip on fans on low seting a 100mm intake plugd into a thermastate controler set to 35'c. A 125mm outake fan wiv a charcole filter conected no controler just permanantly on full power. Any my room temp at highist is 28'c avtige ov about 26'c n lowest is as low as 24'c wiv th light on and drops to sary low 16'c wen off if orderd a heater for the tent at nyt but worrid about leving it on constantly n iff I used a timer the temps will b up an down wont they any ideas guys