Yes I meant the supports. I will silicone them just to be safe I am going to have a pool at the front of the tank that the waterfall is going to drain into. Name: setup.jpg Views: 422 Size: 109.0 KB One of the rock wall pieces are going on the back wall and the other is going on the left wall. I am still deciding how I will do the waterfall; whether i will use Great stuff, or the same foam I used for the rock wall.