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Message: <blockquote data-quote="danmyersmn" data-source="post: 119218" data-attributes="member: 2096">Have you thought about raising the sponson off the bottom by 1/4" - 1/2"?  That should help get it out of the water on plain and when your sitting it will sink back into the water and perform as intended.   A standpipe setup like that is how overflows work in drilled aquariums with sumps so it will work the same in a "Portible aquarium" <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink    ;)" loading="lazy" data-shortname=";)" /> A standpipe in the drain will work as an overflow but I don't know how well it will work with the drain out the back of the boat and below the water level. I suspect that since your overflow is higher then the water level the water pressure in your livewell will be higher then the water pressure in the lake and allow the livewell to flow into the standpipe.</blockquote>