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Protein skimmers

Decide whether your system benefits from one, size it for the actual load, then prove it fits the chamber and maintenance space.

4 connected guidesUpdated 14 August 2026UK prices

Choose your route

01

Need decision

Does a reef tank need a protein skimmer?

What a skimmer contributes, when it is optional and what must replace its export and aeration role.

↗02

Sizing method

How to size a protein skimmer

Use net water volume, livestock load, nutrient strategy, sump geometry and service clearance—not a fixed multiplier.

↗03

Commercial comparison

Best protein skimmers in the UK

Five current routes compared by format, footprint, water depth, control, power and checked UK price.

↗04

Compact systems

Best nano protein skimmers in the UK

Internal and hang-on choices for compact systems, including the chamber-fit measurements that decide compatibility.

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THE SKIMMER RULE

Capacity without context is not sizing.

A skimmer rated “up to 500 litres” tells you little unless you also know the assumed livestock load, air intake, sump water depth, physical footprint and available height for removing the cup.

START HERE

First decide whether you need one.

A skimmer is useful, but it is not compulsory in every successful reef system.

Make the need decision →