About This

• 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.