I just bought a complete home growing masterpiece, its got an ebb&flow system, using a 40-gal. res. and a 4x4 tray. Can fan air filter attached to a 4-in can fan. An Xtrasun ballast 120/240, and Xtrasun 22"x22"x8" light hood, w/ glass, running a sodium halite 1000w bulb. A 6" can fan pulls air...