the tile has a thi bead of silicone around the edges and some squiggly lines throught the middle...i thought about that too. i suppose if you wanted to make it a little smaller it could be removable for cleaning but i was looking more permanant.
mike
Very cool, however, I'll have an acrylic tank with a black bottom, and black background.... You know what they say, "Once you go black you'll never go back"..... I believer whoever stated this first was talking about aquariums.....