Activated carbon filter Tetra CF 800/1000 plus for aquarium internal filters, 1 piece

Tetra CF 800/1000 plus activated carbon filter cartridge is designed for use in compatible Tetra internal aquarium filters. Supplied as a single cartridge, it captures dissolved organic compounds, residues of medications and other undesirable chemicals that cause discoloration and odors in aquarium water. The cartridge is intended for routine replacement to help maintain clear water and support stable aquarium conditions in freshwater and tropical setups.

Advantages

The activated carbon media reduces unpleasant odors and removes dissolved organics that cause water discoloration without altering pH or other water values. Its form factor fits directly into Tetra CF 800/1000 series internal filter housings, providing a straightforward maintenance solution. Using a dedicated carbon cartridge helps preserve visual clarity and assists in restoring water quality after treatments or contamination events.

Suitable for

• Routine cartridge replacement in compatible internal aquarium filters
• Removing medication residues after treatment cycles
• Improving water clarity and reducing odors in freshwater aquaria
• Temporary treatment following accidental contamination or organics buildup

Key specifications

• Type: Activated carbon cartridge suitable for internal filters
• Quantity: Single cartridge per pack
• Function: Adsorption of dissolved organic compounds, odors and discoloration
• Effect on water chemistry: pH-neutral, does not affect water values when used as directed
• Compatibility: Designed to fit Tetra CF 800/1000 series internal filter housings
• Recommended use: Routine replacement as part of regular filter maintenance

How to use

Turn off and unplug the internal filter unit before performing maintenance. Remove the used cartridge from the filter housing and dispose of it according to local waste regulations. Insert the new Tetra CF 800/1000 plus activated carbon cartridge into the filter housing following the manufacturer’s alignment instructions, reassemble the filter, and restore power. Allow the filter to run and the water to circulate; adsorption performance typically becomes noticeable within hours to days depending on contamination levels.

Usage recommendations

Replace the activated carbon cartridge regularly according to aquarium load and manufacturer guidance; after medicating the aquarium, replace the cartridge to avoid prolonged adsorption of therapeutic substances. Do not use carbon simultaneously with ongoing medication if medication efficacy must be maintained. Monitor water clarity and odor; replace sooner if performance declines.