Fluval Ammonia Remover insert for 307/407 filter cartridges, pack of 6

Fluval Ammonia Remover inserts are replacement chemical filtration media designed for use with 307 and 407 filter cartridges. Supplied as a pack of six, each insert is formulated to reduce dissolved ammonia compounds in both freshwater and saltwater aquaria, helping to maintain stable water parameters and support fish health during routine cartridge maintenance and replacement.

Advantages

Each insert provides targeted ammonia reduction without altering water clarity, enabling more consistent nitrogen control between full cartridge changes. The compact design fits directly into compatible filter cartridges, simplifying installation and periodic replacement. Using dedicated ammonia removal media helps protect sensitive fish and invertebrates by lowering toxic ammonia levels that can accumulate from feeding, waste breakdown, or biological imbalances.

Suitable for

• Home freshwater aquariums with Fluval 307-compatible cartridges
• Marine and saltwater tanks using Fluval 407-compatible cartridges
• Aquaria undergoing cycling, increased stocking, or elevated feeding
• Maintenance routines that stagger cartridge replacement for continuous filtration

Key specifications

• Pack size: six ammonia remover inserts
• Compatible filter cartridges: designed for use with 307 and 407 cartridge housings
• Application: reduces dissolved ammonia compounds in aquarium water
• Suitable water types: freshwater and saltwater aquaria
• Form factor: compact insert designed to fit inside OEM cartridge compartments

How to use

Open the compatible Fluval filter cartridge according to the filter manufacturer’s instructions and insert the ammonia remover element into the designated media chamber. Replace inserts as part of your regular cartridge maintenance schedule; frequency depends on aquarium bioload and water parameter monitoring. When replacing multiple inserts, stagger changes if you maintain continuous filtration to prevent sudden shifts in water chemistry.

Usage recommendations

Monitor ammonia, nitrite and nitrate levels regularly with a test kit. Replace inserts immediately if ammonia readings remain elevated despite media use, and perform partial water changes as needed to restore safe conditions. Store unused inserts in a cool, dry place and follow handling guidance from the filter manufacturer.