Choose your route
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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.
Sizing method
What size protein skimmer do you need?
Use net water volume, livestock load, nutrient strategy, sump geometry and service clearance—not a fixed multiplier.
Commercial comparison
The best protein skimmers in the UK
Five current routes compared by format, footprint, water depth, control, power and checked UK price.
Compact systems
The best nano protein skimmers in the UK
Internal and hang-on choices for compact systems, including the chamber-fit measurements that decide compatibility.
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.