I am researching the building of a deep room divider tank Dimensions:1730mm x1200mm x770mm. Pilkington glass manufacturer recommend using 2x 15mm sheets toughened heat soaked glass laminated together to withstand the hydrostatic pressure, they also recommend either fin bonding or a frame. So who am I to disregard advice of the worlds top glass specialists .So as fin bonding is ugly I have decided on a welded frame 50x50x3mm angle iron. I have ruled out acrylic having worked with it for years it unavoidably scratches. Does anybody have any thoughts on these specifications?