im gonna try to get them filled to test them (only place i can do this is in the garden though unfortunately as no garage.fr499y wrote: ↑Wed Jan 13, 2021 13:01 pm Tank Water Height (H) (mm): 700
Tank Length (L) (mm): 1150
Tank Width (W) (mm): 700
Recommended Safety factor (Sf) : 3.8
Recommended Side Glass Thickness at Sf: 13.3
Maximum Deflection of Glass (mm): 0.44
Recommended Bottom Glass Thickness at Sf : 18.7
Maximum Deflection of Glass (mm): 0.34
So working on that theory, 15mm glass with a 20mm base is what you need for a braceless tank, knock a couple mm off the thickness for a braced tank and 10mm is probs more where you would want it. I suspect the water pressure to increase by quite a bit from 400mm to 700mm height. You might get away with it at 8mm, fill it up outside ( or garage or a place it can drain properly! ) stick a pump in and leave it a few days and see.
the way i see it i have few options
1 wing it and prey
2 break the tanks down and have the side panels re cut to approx 500/550mm then rebuild so i can still have the top of the tank exposed (ie no hood) as i was hoping to have hanging supsended lights directly above
3 leave it exactly as it is and only fill it to 500/550mm high (where id feel more comfortable and have the lights inside the tank so to speak inbetween the top of the water and current top of tank with a special made hood that would have to hook over the front top 150mm of the tank to hide lighting inside.