here is a pic of the top of my tub, my lights are mounted to the inside with a 5 light fixture(the type you would put in a bathroom vanity or something) mounted the fixture to the tub with 2 screws from the hardware store and then wired them with an extension cord, you can get all the detailed info on how to make one here: http://boards.cannabis.com/growroom-...b-growbox.html

my tub is the same but i used 46 gal tubs and a 5 socket fixture for the lights instead of the 3 socket fixture, then for my fans i put one computer fan at the bottom of the tub blowing in to the tub and then one computer fan on the top of the tub blowing out(so it sucks the hot air hot and blows it into the closet) i use the two fans instead of the one on top and an elbow piece of pvc like in the original, im not positive about the cost but i think its around $100-$115 per grow tub.

the original tubs in the how to post hold one heavily LSTed plant, i havnt tested it but i figuer mine can handle two per tub since its about double the size