Each filter media size: 290mm x 150mm. 20 pieces in one sealed pack.
Large Ceramic Air Diffuser - produces large amounts of bubbles. Quickly aerates water, increases dissolved oxygen.
BioDigest is made up of nitrifying, nitrate-reducing bacteria capable of converting ammonia into nitrites, nitrites into nitrates, and nitrates into nitrogen.
Medium, 27 x 30 cm. Washable nylon net with plastic zipper suitable for freshwater and marine aquarium