tent or spare room

so for a 15 to 20 plant setup would you guys suggest a tent? because i have a spare bedroom and garage.....

construction or electrical of any sort wont be any problem to me at all by the way

what kind of lighting system you planning on?

prolly a 600W HPS or 1000w HPS

I'd use the tent if heat wont be a problem for you.

how many feet do you think it will actually take up so i know how big of a tent i will need?

15-20 plants

would a 600w cause problems with heat?
http://www.littlegreenhouse.com/accessory/lights3.shtml

could i get ventilation to the light in a tent?
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15-20 plants would take more than 1 1000 watter. I would suggest you uisng the spare room instead of garage because it is inside your home and more secure. 15 to 20 plants would probably need a space of 8' by 12'. this ensures you have enough room for veg and flower as well as space to work around the plants.