I want to make a small frag tank for myself but cant find a glass tank to fit the area I have for it, so I want to make it from acrylic. I found polycarbonate sheets that are 250 times stronger than glass. I would think that this sheet would not be as prone to bowing as acrylic sheets. Does anyone have any experience with this? I also want to know if Weld-On #40 Pint Kit (A+B) is safe for welding the sheets and will not leach anything into the tank once it is cured. If I were to go with a 1/4 inch acrylic sheet for a tank that is 1.5 feet by 1.5 feet by 1.5 feet would that be in danger of bowing? Thank you