I have a 90 tank and I wanted a natural looking background. So I took a sheet a foam 2" thick (from Lowes) and shaped it into what looks like a rock formation along the whole back wall of my tank. Then I coated it with several layers of epoxy. It actually looks really cool.
The mistake that I made is when I caulked the sheet of foam onto the back of the tank. I made a bead of caulk in a random circular motion. Now, there are many areas behind the foam that will trap air when the tank is filled with water because of the caulking pattern and epoxy leaking behind the foam.
Is this going to be a problem. I am worried that having different points of pressure on the back wall will crack it. I thought of maybe drilling small holes in different areas in the epoxy and foam to release the air pockets. Does anyone have any thoughts to this?
The mistake that I made is when I caulked the sheet of foam onto the back of the tank. I made a bead of caulk in a random circular motion. Now, there are many areas behind the foam that will trap air when the tank is filled with water because of the caulking pattern and epoxy leaking behind the foam.
Is this going to be a problem. I am worried that having different points of pressure on the back wall will crack it. I thought of maybe drilling small holes in different areas in the epoxy and foam to release the air pockets. Does anyone have any thoughts to this?