i use one big one rite now for my clones and babys... goin to veg them all in one tote b4 taken them out to the flowering room. only thing i dnt like much about them plastic ones is if you plain on packn lots of lites im them you GAT to paint the outsides BLACK! i painted mine and painted the insides with KILZ2 stops the mold and junk! i like the mobil idea. my whole setup will easly fit all in that tub. even the flowering stuff and clone maken thing. minus the plants!