Tools/Protein Skimmer Size Calculator

Protein Skimmer Size Calculator

Skimmers are rated in "up to X gallons" - but that rating assumes a light bioload. Get a real recommendation based on your actual tank.

Your Tank

Total system volume

95 gal

Effective bioload multiplier

1.4x

Buy a skimmer rated for

133 gallons

manufacturer's "up to" rating - don't buy one rated exactly at your tank size

Why oversize: Manufacturer "up to X gallon" ratings assume a lightly-stocked tank. Buying to that number exactly means your skimmer is already maxed out on day one - leaving no headroom as your bioload grows.

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