I use a piece of filter floss in mine too. Works better than the foam for keeping the fine media in. You do need to reduce the flow though still to keep the media so that it is just lightly fluidized.
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I retired and got a fixed income but it's broke.
Ed
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50 gallon FOWLR, 10 gallon sump.
130 gallon reef, 20 gallon sump, 10 gallon refugium.
10 gallon quarantine.
60 gallon winter tank for pond fish.
300 gallon pond with waterfall.
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