87system’19EQPT on May 23, 2019
ytateno ‐ Overflow connecting multiple sumps with different functions is the main feature of the 87system.
ytateno ‐ The old system was overflowed by 3 steps, but it was difficult to maintain, so the new system was turned into 2 steps overflow. I remove the sump for refugeum and place the protein skimmer in the sump in front of the biofiltration sump.
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