Here's a 4 x 12 cab for $200. (Plus $69 shipping, ouch). With good ventilation this could accomodate a 150 hps, especially if the ballast is outside the box (does a 150 like that exist?).

The bad thing about hps is how far it throws radiant heat. Never used a 150 myself--can you get the plants close enough to it so you don't hafta keep the plants "tied to the floor?" If they get heat stressed, they might also yield fluffy light buds. You could certainly try the 150, and if you can't control the temps switch over to CFL's. (I'm not a big fan, but in this application CFL's are well-suited.) In reality, optimizing the grow environment requires adjusting your lighting as the plants change shape.

For some reason I can't post pics right now. Could probably find some pics of a successful cab with the innards exposed. Have seen a 1-12" and 2-12". A 4-12" is about 29" x 29", 12-13" deep. Most come with casters so you can roll 'em around.


Buy Peavey Windsor 412 4x12 Speaker Cabinet | Amp Cabinets | Musician's Friend

Rock on! :hippy: