Powkoo Double Sponge Filter Aquarium Filter Sponge with 2 Media Chambers

Kind Reminder:
1.The filtration media box is not install into the filter when sending out,customer need to self-assembly.
2.Just fill filtration media into 2/3 box, and DO NOT block the water inlet hole.
3.Make sure to use the tank water for filter sponge cleaning to avoid damaging the formed nitrifying bacteria.
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.
Or they can be used as pre-filtration unit by fitting to an external or a top filter.
Squeeze the sponge filter in tank water or cold water for 5 mins for 1st using, easy to digest form colonies of bacteria.