AQUANEAT Replacement Canister Filter Pads Compatible with SUNSUN HW-302 Aquarium Filter Media Sponge Floss;

Specifications:
Blue coarse filter pads: Serving as host for the beneficial bacteria colonies which are essential to a healthy aquarium. (Reusable after rinsed)
White fine filter pads: Trapping particles of uneaten food, fish waste, decayed plant materials, and other debris without restricting water flow.
Use for freshwater and saltwater aquariums.
Promotes nitrogen cycle reduce the death rate of fish.
Includes:
4 pieces of blue filter pads
12 pieces of white filter pads
Tips for Usage and Maintenance:
Maintenance of Blue Filter Pad:
The sponge will need to be rinsed every time it becomes dirty, about once every 1 to 4 weeks. It's helpful to reserve the beneficial bacteria by washing the sponge gently with water from the fish tank instead of tap water.
After 6 to 12 months' usage, the micro holes of sponge is gradually clogged by the tiny debris, the beneficial bacteria won't have as much living space as before. That's when the sponge filter starts to lose its efficiency. So it is also recommended to replace the sponge once 6 to 12 month or when the sponge gets worn out.