ghummel

So this is the stand I built I wanted it open enough to pull the sump out from the front the other section will be for electrical and a drower at the to if there is enough room also might put one in on top of sump section

Is this bracing if so what kind (sorry phone pics)

So I filled my 75gal acrylic up to make sure there were no leaks and there are none but it bulges out a lot IMO is this normal?