Aillsa Filter Pads Bio Sponges for fits sunsun canister filter HW-304B/404B/704B, HW-3000, Polar Aurora 525gph,Polar Aurora x04 Replacement of filter pads
Aquarium sponge pads 3 densities are provided：coarse medium and fine，Each one can be rinsed and used repeatedly
The use of high-quality sponge, not only will not limit the flow of water at the same time can also filter the obvious tank debris particles
The sponge pads are very easy to install or replace because of the precise cut, just put them in my canister filter tray and fill the canister.
Note: 9 bio sponge filter pads: 3 coarse (black), 3 medium (green), 3 fine (blue), remove and clean with water when you notice the sponge pads are getting dirty to ensure water quality.
