Im doing 12/12 with cfl's?

[Smokin Moose]

I think the 400 W HPS will be too hot.

 

[Shifty420]

i live up north i will need more heat in the grow box and the room is definatly not around 22C/70somethin F

 

[Boss]

I'm in a northern latitude as well, so I run the lights at night, and off during the day. Sometimes I put Hot water in gallon jugs to keep it warm in there during the day.

 

[Ugodmade]

my 70 watt hps gets kinda hot and iv got 2 small fans in with mine so i bet Smokin Moose is right 400w would be to hot.. But im new and not sure my plants will do anything yet lol but im hopeful good luck ! And if i can ask if anyone knows if starting from 12/12 will a 65k be any help along with the blue spectrum lights or shuld i just do away with it ?