I have a 29g i got with a setup i bought, it was used a sump for a reef tank. The tank is empty except for a float valve installed through a 5/8ths hole in the side. Im planning on using this tank as a planted or a growout tank in the near future. It is possible to patch the hole with a peice of 3/16ths lexan? I dont have any small peices of glass and the nearest glass shop requires a $50 minimum order. I was planning on patching on the inside of the tank and then using a patch of the same side on the outside. Is this possible?