Fluval U4 internal filter Reef Zlements and tests parameters from 0

and tests parameters from 0 to 5 ppm

In a reef aquarium

• Toolless maintenance

• Compact intelligent sensor with twin optics and visual alarm

For that purpose a proper calcium additive together with an accurate test kit are required

Fluval U4 internal filter Reef Zlements and tests parameters from 0Offering outstanding 3 stage filtration, increased water movement and vital aeration, Fluval U Series internal filters are the perfect solution where external filtration is not possible. Features Designed for aquariums up to 240 L 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