As for sumps, I used the eshopps nano cube. It’s great except for one major drawback. The under channel below the skimmer section is impossible to clean. I end up having small feather duster worm living down there. A better sump would have been the Fiji cube 15, where one can diy a wall to split the large sump for a separate refugium and skimmer. Or the bashea ss Mano. Personally I prefer the Fiji because the location where the filter floss/sock holder is perfect for inserting a klir d-4 v2 fleece roller.
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