The best replacement for wet dry filter is sump.

The best alternatives to wet dry filter are rated as following:

★★★★★	sump
★★★★	canister
★★★★	refugium
★	canister filter

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Speaking about wet dry filter, one probably shouldn't forget about protein skimmer.

Other search terms related to wet dry filter and their ratings are:

★★★★★	protein skimmer
★★★★	refugium

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Google Trends

Scale is based on the average worldwide traffic of wet dry filter in all years. Click on graph for more.

wet dry filter

sump

canister