Keep your tank looking crisp with the Fluval Clean & Clear Cartridge, a genuine replacement media insert made for Fluval U-Series internal (underwater) filters. If you run a Fluval U1, U2, U3, or U4, this cartridge is designed to slot into the system to support clearer, healthier aquarium water.
What makes the Fluval Clean & Clear Cartridge especially useful is its high-performance resin media that targets common water-quality troublemakers. It has been proven to help reduce phosphate and nitrate, which can contribute to algae issues and dull, cloudy water when they build up. By lowering these compounds, the cartridge helps keep water “beautifully clear” and can extend the time between water changes as part of a consistent maintenance routine.
How to use: Add the Fluval Clean & Clear Cartridge to the central Fluval U filter cartridge alongside BIOMAX media for balanced filtration performance. Replace as needed based on stocking level, feeding, and your filter maintenance schedule.
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