I'm thinking of building a small grow box, I plan on DWC and use 2-4 50W hps I have. Outside temps drop down to 20 deg (and sometimes lower (NJ area). I know a plant cannot survive that, but with proper insolation, I think the temp can stay within the desired range when the light are on, the problem is, what to do for the 12/12 cycle. While I have some ideas, I'd love to hear if anyone else has done this, and get any possible tips. Thanks.
i dont see why it wouldnt. just drag a heater out there along with your light. it might take a few hours with a thermometer in hand to dial in when and how long the heater needs to be turned on. yeah its possible, just make sure your enviroment is up to snuff take care and keep