Honestly most people would replace it with new glass panel!!
But to replace a new panels it might cost you the price of buying a new tank!!
a)ok in this situation if i intend to fix this promblem without replacement, i would buy me RIGHT ANGLE bar (L shape)50-100mm x
alliminuim, and max it out with neutral silcone"
b) more expensive than plan a" cut another single panel and set back 100-200mm off broken edge, and place the new panel inside the tank then silcone to make a new side wall..to brace this new wall you will have to siclone a new piece of glass over the top. Hope that make sense"
"sometime you need to be more creative, you got to make mistake to learn the right solution"
enjoy :thup: