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#7 in Aquarium Filters
Fluval U2 Underwater Filter
Fluval
$25.00 – $38.00
Fully submersible internal filter rated for 12-30 gallon tanks with a 3-stage filtration system. The compact design mounts inside the tank with suction cups and features an adjustable output nozzle.
8.1
Good
Consensus
Don't buy this if…
- Clean the impeller every 2-3 months; debris buildup will cause rattling noise and reduced water flow.
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