Yutiny Aquarium Filter Biochemical Sponge Filter Fish Tank Oxygen Pump Filter Sponge Aquarium Water Filter Media(XY-2881)

Description

Instruction: 
1. This product needs to be worked with air pump(the air pump should be above 2W).
2. The air pump should be placed at the top of the aquarium to prevent backflow to the air pump due to power outage,Pls Soaking 5 minutes in the water of the aquarium before use it’s good for the Nitrifying bacteria forming colony rinse sponge.
3. Rinse your sponge and use aquarium water. Don’t use hot water.