Fluval AquaClear Freshwater and Saltwater Zeo-Carb Insert for AC20/AC30 Aquarium Power Filter - 2.1 Oz

A convenient combo media insert designed for AquaClear 20 and 30 filters, combining two types of chemical filtration. This single cartridge contains activated carbon to remove discoloration and odors, as well as ammonia-neutralizing zeolite to control toxic ammonia. By using Zeo-Carb, you refresh your tank’s water clarity and purity while also safeguarding against ammonia buildup. It’s an ideal maintenance media to use after medicating fish or during heavy bio-load periods, helping maintain a clean, healthy aquatic environment with minimal effort. (Fluval AquaClear 20/30 Zeo-Carb Cartridge, 1-pack)