Measured, not guessed
The reef gear authority that shows its math.
Data-driven reviews, side-by-side comparison databases, and calculators for saltwater aquarium gear — so you buy the right skimmer, pump, or light the first time.
The tools
Answers you can’t get from a listicle.
Return Pump Calculator
The real flow each pump delivers at your actual head — not the box GPH. 41 pumps, ranked.
Calculator · LiveProtein Skimmer Sizer
Which skimmers actually fit your tank once we derate the optimistic ratings for your bioload.
Calculator · LiveReef Build Cost Estimator
Itemized up-front + monthly running cost for any tank size and tier.
Gear, organized by your tank
Start with your setup.
Protein Skimmers
By tank size, by budget, by real bioload rating — not guesses.
Return Pumps & Flow
DC vs AC, turnover math, and the genuinely quiet ones.
Reef Lighting
PAR by depth, coral type, and tank footprint.
Controllers
Apex vs GHL vs Hydros — what actually matters for your build.
Free reef build kit
Get the Reef Gear Cheat Sheet.
The exact skimmer / pump / light picks by tank size, plus our full build-cost worksheet. One email, no spam.