I remember hearing/seeing that on the NE tank too. The normal operating volume is 3/4 full. But if my return pump is shut off the sump does fill to the top. I don't really want to drop the water level to 1/2 but if I did I guess I could get away with not having it and not doing anything else. I like Craig's idea of siliconing eurobracing to the underside front and back trim. The main issue I have with patching the centre brace is that I want to continue to use a single MH pendant over top which puts everything right in the way of the light.
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