How to heat your grow room. +rep

my grow box right now is just left open everynight with a fan blowing in on it and a heater in the room for when the light goes off. I just pulled my crop and I'm revampin for the next round, I want to close it up mount my fans inside and I wana pull air from the room but how do I keep it heated at night so the temp doesn't drop? The house I'm in isn't the warmest specially being winter. Any advice would help I'll give out rep

heat the room with a HPS light! lol

but yeah if it doesnt get below 50 in your house you should be good at 'night time'

get the lights closer or add lights. that heats the space pretty well.
also make your exhaust at the bottom to draw hot air from above.

If its too cold - add lights. Can't go too wrong with that.

Thanks but what about when the lights are off

well... if you are revamping... run your lights at night when it's coldest

orr.. swap out one of your fans with a heater fan

if there's no light you need to heat it by other means. like a radiator or a few 100W incadescent bulbs outside the grow room.

also you should start your light cicle when the sun sets down.

I would use a small baseboard heater.

whats the temp when the lights are off?
If its 10-15 you should be alright. 18 is the best

Isnt it sappose to be cool when its dark? room temps are fine. Im sure its above ten in your house. If i was you i would be thinking how hott its going to get in the summer. or even spring!