Quote Originally Posted by HalfBaked
We built ours about 2 1/2 years ago using caps.

We used plexi to cover it and kind of regret it now, the caulking around the side did leak and the caps started moving around when we moved a few times, but we popped top off and fixed it then resealed it. Still leaks a bit but just leaks out onto the floor.
Did you change the caps?