Here is a drawing of the design for the tile base. When complete, the tile rests on a lip of the wood, the tile is completely sealed into a bed of silicone making it totally waterproof. The UTH is then mounted to the underside of that tile on the OUTSIDE of the cage COMPLETELY sealed away from any moisture! The bottom of the cage acts sits up 1" from the surface it rests on and the tile is 3/8" inlayed into the wood giving you another 3/8" clearance. In total you would have a total of 1 3/8" air space under the tank to vent the UTH. Tile can not melt or burn so in the event of a thermostat / UTH malfunction do do not have to worry about melting plastic!!! So whats wrong with this design Kitedemon??? BTW Heres a few pics of my set ups, wheres yours? Still say I dont know what im talking about??