AZOO Active Filter Media 4 in 1 Aquarium Filter Media

400 times effective surface and decomposition rate than bio-filter ring
Improves water quality to enhance the health and vitality of aquarium fish
Promotes pristine aquarium conditions
Detoxifies free radicals, promoting good fish metabolism
All these 4 active media are in 12 numbers each and is best suitable for aquarium upto 200 liters