Protein Skimmer Size Calculator
Size a protein skimmer for your reef (litres + bioload), then see which models we stock still clear that rating — with a clear “why this works” for each pick.
1. System volume
Display + sump − rock/sand is ideal. Display-only is fine as a starting point.
2. Bioload
Mixed reef — size ~1.4× volume on the manufacturer rating (ratings are optimistic).
3. Mount style
Filters recommendations to that install style (Any = all).
Result
System volume—
Bioload—
Target maker rating*—
Mount filter—
Recommended skimmers
Matched to bioload-adjusted manufacturer rating. In-stock first. Maker “up to X L” labels are optimistic — we size up for feeding load.