How much weight can glass take

[Hybridfish7]

So I have a 33 long. I also have: around 100 lbs of river rocks. Basically what I'm asking is, how many rocks can I put in the tank?

 

[deeda]

All of them, just be careful placing the rocks in the tank. I like to set the rocks directly on the glass and then add the substrate around them in case you have fish that like to dig.

 

[Toby_H]

When I'm putting a lot of rock in a tank, or using rock that has sharp edges, I sometimes put corrugated plastic on the bottom glass, then stack the rock, then add substrate.

Back in the day we did the same with egg crate / light diffuser.

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