Might not be a dumb question. Something like that could work, but maybe harder to plumb to a sump without leaking? Never done a wood or fiberglass tank. Also I think it will be easier to clean a glass tank vs a homemade system. Allows me to view from the side vs having to use a viewer from the top when the water is rippling. And with the exception of blowing my day today? It seemed to be a pretty easy project.This might be a really dumb question but if you do shallow frag tanks and these aren’t display tanks or in a store, what’s wrong with some wood or fiberglass and a liner? Something other than glass or acrylic.