Sump tank busted in the middle of the night.

[Delphinus]

It seems to me, and I only speculate of course (just some random rambings on my part here...), but if the sump conformed perfectly to the inside dimensions of the stand, then this sump-inside-the-stand-idea also leverages some of its strength from the stand, not only the multiple edges and whatnot from the baffles. ...

Which kind of leads me to ...

Originally Posted by spikehs

How would you go about glueing baffels into a rubbermaid anyways, as they do bow a bit?

I'm guessing here since I haven't done it myself, but .. Use a lot of silicone, and make an external wooden frame of some sort for the rubbermaid to prevent bowing.