Fluval U4 Underwater Filter refugium Clumps tiny floating particles together

Clumps tiny floating particles together

Air Silencers

Brightwell Aquatics Xport Bio Cubes

3 Step SterilizationHikari's 3 Step Sterilization process assures unequalled product quality

The bacteria will either be skimmed off or taken up by corals and filter feeders

Fluval U4 Underwater Filter refugium Clumps tiny floating particles togetherDesigned for aquarium up to 65 gallons Use as a primary filter for smaller aquariums, or supplementary filter for larger aquariums Position horizontally for shallow tanks, larger tanks with low water levels, or to create a decorative waterfall feature Position vertically against aquarium wall to create currents or customized flow patterns Convenient flip top lid allows for quick and easy access to filter cartridge for maintenance or replacement