How much weight can bottom panel hold?

[Aquavaj]

It's crazy how much weight the bottom panel can hold being that it's elevated on rimmed tanks. On a 40b that's over 320lbs with just water alone. But how much can it support before risking it cracking? Threw a bunch of dry rocks to seed with the existing 3 rocks. It's about 3/4 full of rocks.

 

[Saltyreef]

It's crazy how much weight the bottom panel can hold being that it's elevated on rimmed tanks. On a 40b that's over 320lbs with just water alone. But how much can it support before risking it cracking? Threw a bunch of dry rocks to seed with the existing 3 rocks. It's about 3/4 full of rocks.

They are extremely strong.
I would only worry about cracking it from a landslide of rocks.
There was a video circulating showing how much a 10g aqueon tank can hold.
At one point he even stepped inside it and stood there lol.