The arms holding the sponges are adjustable to position the sponges better away from the tank walls. This filter is perfect for tanks housing baby fry or shrimp as they will not get sucked up and have a food source to eat off the sponge. Efficient product for the price and some fish will enjoy the decreased current in the tank. Features: Sponge filters provide both mechanical and biological filtration Simply install an airline into the unit and provide both aeration and filtration for your fish Aerobic bacteria colonize the sponge providing a bacterial substance to facilitate the nitrogen cycle The filter is the best choice for specific application for raising Discus, Angel Fish and other fish the sponge traps larger waste particles mechanically cleaning the water without trapping baby fish They are useful for as breeding filter or as secondary filter they can be used as pre-filtration unit by fitting to an external or a top filter Package Includes: 1 x Powkoo Aquarium Sponge Filter Kind reminder: Squeeze the sponge filter in tank water for 5 mins for 1st using, easy to digest form colonies of bacteria Rinse the sponge must use the fish tank water, never can use hot water
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