- The Reaction Aquarium Replacement Filter Media HB-55 carbon filter cartridge provides chemical filtration for your filter system.
- Fits in the JBJ Reaction Hang-on-Back Filter (sold separately) and is easy to replace.
- Keeps your aquarium water crystal clear and healthy.
- It is recommended that you replace your filter media monthly.
The Reaction Aquarium Replacement Filter Media HB-55 (2 Pk) coarse sponge provides mechanical filtration, trapping free-floating detritus to clear your aquarium water. The sponge's coarse and porous surface also provides biological filtration by allowing beneficial bacteria, which remove ammonia and nitrates, to grow. The carbon filter cartridge absorbs impurities and removes odors and discoloration. To replace your filter's media, simply slide out any old carbon filter cartridges and slide in the new ones. Then, remove the old coarse sponge and replace it. It's that easy!
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