Reef Aquarium Equipment Sizer & Planner

Enter your tank size and stocking plan to get sized recommendations for your protein skimmer, return pump, total flow, and reef light coverage — the three pieces of equipment that separate a reef tank from a freshwater setup.

All calculations use accepted reef-keeping ratios (skimmer rated for 2–3× display volume, return turnover, and PAR-driven light wattage per gallon) so you can shop confidently instead of guessing.