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- Apr 8, 2018
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Been considering the cups. That's a great idea with the bio balls...since I have like 50 pounds of them new lying around lolJust to give you some feedback about the cups, I switched myself because the socks just weren't doing it for me. Mine aren't the official Red Sea cups, but the premise is the same. What I've done is instead of using sponge at the bottom I put in 5-6 bio balls. This keeps the filter floss from touching the bottom and really increases the flow through the cups. I change my floss about once a week (from the pic you can see their about due) but I never have problems with the floss getting clogged. Hope this helps! Nice build btw