try this and have a look. the whole thing can be removed easily. I'm sure a substitute pump could be fit with a lil work and some of the originals mounting parts. i have the HOBIE Live well and i have no problems with it. Also a trick you might want to try is to put a ballon cut on the end over the pump outlet/fill pipe to allow shutting the pump of without letting the water run out like a big drain. the balloon will collapse and clog the pipe preventing the water from running directly out. Takes a few trys to get the balloon hole the right size but it works ok for the most part.
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