You don't need nearly as much light for vegging as you do for flowering, and you should perhaps look into getting some T5 fluorescent lights, at least for vegging. They're more efficient and better for young plants than MH lights. If you live anywhere near canada, your basement will lose a lot of heat to the ground, pretty much all year, so you're not too bad off as far as temperatures. Plus, in the winter you'll have nice warm floors.

Do you have any natural gas or propane appliances in your basement by any chance? If so, these can help boost your CO2. For instance, you can get a gas hot water heater to vent directly into the basement. A furnace, though, would use way too much oxygen to be able to vent that straight into your basement.
khronik Reviewed by khronik on . NEW SETUP QUESTIONS finally i moved into my new house. i got a huge basement and i wanna do this up right. i went to canada got myself like 100 high quality seeds(thanks ontario seed bank) and now its time to set up the room i;m thinkin 6 600w MH during veg and 6 600 HPS during flowring my room is 15ft wide 28ft long and 7.5ft tall... i am gonna throw a 10,000BTU ac down there and i wanna set up some sort of ventilation. let me know any advice or input on the lighting and if u think the room is large enough Rating: 5