Well try a test run for 24-48 hours to figure out what your temperature swing is. Like run the light on at night and the heater on in the day? That may work to bring you to a normal temperature range. I assume insulation is out of the question? The best you can do it to warm the whole room and see how it goes in the test run. I'm sure you can find a balance that would work.

You never know until you try.
Zandor Reviewed by Zandor on . Zandor- is it possible I have access to a shed, I am thinking of designing a grow. The dimensions are 5*6 feet. The problem is that it gets very cold here in the winter and im thinking will this limit possibilities. There is a small portable heater that blows hot air already set up, but how would I be able to use ventilation as the temperature is so low. Im thinking of using 1 1000 watt hortilux hps for the entire grow, perlite/soil mix, bat guano for nutrients, walls are already white. I will put a few fans in there Rating: 5