i went to the store today .. the 3 inch drain stuff is lighter and less money then Schedule 40.. so 16, 45 degree elbows ,16, T's and 8 10 ft 3inch pvc is $120. i still need 2 steel ring's and spokes (i'll be using threaded rod i think) once its all together i'm thinking 2 sets of roller skate wheels in each ring attached to something to hold the whole thing up.(i will have to build a reservoir tank too).i need a cool tube ,perlite and 48 clones and i'll be ready