Before you can figure out how thick things need to be, you need to decide two things: How big, and how big... oh that is one thing, no.... the second one is the dimensions of the tank. Third thing you need to think about is the weight. Think it took 12 guys and machinery to get
GlassReef's 375 gal in the front door and on the stand. Incredible build though, worth a look at.........
Troylee just finished a 300 something gal acrylic tank.....also worth a look see
http://reefcentral.com/forums/showth...readid=1558710
Regards,
Jim