hydroponics components rockwool tray to make it your way rwt200 rwt205 rwt210 great for a customized hydroponics set-up this black plastic rockwool tray is sized to accommodate a six-inch rockwool slab the pictured elbow and plugs are available separately rockwool tray 10.45 rockwool tray plug 0.50 rockwool tray elbow 1.25 tray stand in a snap the snapture tray stand uses specially designed connection pieces to turn regular 1 1 pvc tubing into a sturdy stand for a 4 x 4 4 tray each kit contains foot/base 4 cross fitting 4 dovetail 90 degrees 4 50 long 1 1 pvc support bars 2 32 long ...