Any1 ever bought acrylic to make an aquarium before? I'm lookin at 3 of the walls to be sealed cynderblock and the front wall to be acrylic at 8ft x 2ft x 2ft deep. I think it will be about 240gallons. Any1 know how thick the glass needs to be and will i need a center support like an all glass aquarium? Any links or articals would be helpfull also... Thank you