A tent?...inside a closet?...or just out in a room?
Tents are just as tricky to ventilate, as closets....but yes...the temps must be maintained and the ventilation, too. The main problem with tents...is the low heights. Once you hang the lights...there not enough room for the plants to grow up...unless you plan for it...way, way in advance. (SCROG) (LST)..etc.

hydro growing is even more tricky...than coco coir...IMO.

If it was me?....I'd buy a 250/400 watt...ballast, bulb and reflector package online or somewhere local....and do my first grow in soil. After you learn the basics of growing...then, you can go hogwild, later....:thumbsup:

Google: Grow Light Systems. (I like access discounts)
Dutch Pimp Reviewed by Dutch Pimp on . Question about a grow system Hey all. I'm completely new to growing but im looking to setup my own system in my closet and try and keep it discreet. Originally I was looking at different grow boxes but from what I've read on the forum, most people say to setup your own system. I'm gonna be honest in saying that I'm pretty lazy and I want a good easy system to use that isn't insanely priced. I found this system on ebay. CLOSET CULTIVATOR 400 watt GROW KIT 400w HPS+MH w LIGHT - eBay (item 180111689003 end Rating: 5