I'm trying to figure out the best pool size to use, especially as I'm not sure what size crabs I'll end up with. I know they need to be deep enough to submerge, but also not take up too much digging space.
Currently I'm looking at some 12" x 6" x 4" food trays to use as a base, one on each side for fresh or salt water, with egg crate or something else to create ramps inside.
Here's a simple model (sans doors) to give you an idea of what I have in mind.
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Thoughts...?