Each set has 3 foams ( 1 x Coarse, 1 x Medium, 1 x Fine), the combination of triple density sponges can traps both large and fine particles- working together to produce crystal clear water in your aquarium.
Good for both mechanical and bio-filtration – Special egg crate design offers more surface area for filtration.
Can be cut to fit and used as a pre-filter for any aquarium or pond filter, sump, wet/dry, canister, power filter etc. or your HMF DIY project.
Includes: 1x coarse (Blue) 20PPI, 1x medium (Green) 30PPI, 1x fine (Black) 40PPI.
