So I have decided to go ahead and build my own aquarium, so I think...my plan is to use a 125 aquarium that I have laying around, I'm goin to find a used aquarium or have some glass cut to get my 4' depth. Instead of doing a glass bottom or pond armor I was gonna frame out a 4 ft by 6 ft bottom out of 2x4s 3/4 oak ply over the top. To water proof I want to use a 4x8 sheet of shower surround cut down. I'll then secure that to the piece of oak. I will treat this as my bottom glass and silicone the glass to this. To reinforce the bottom I was going to use 1x6 around the bottom of my plywood and 2x4 frame. 3/8 glass is what I was planning to use. Any suggestions would be greatly be appreciated. Thanks in advance