Aquarium Sponge Filter | AAP-ATI | Replacement Hydro Sponges
COMPLETE Line of THE BEST, Patented HydroSponge Filters (Originally from Lustar) Superior to ALL OTHERS for Biological and Mechanical Aquarium Filtration.
AAP is THE Online seller with In Depth Sponge Filter Information and 3 Decades Hands on Experience Using these Filters.
Why purchase Chinese made rip offs of this sponge filter often sold under different names and often without the full line when you can purchase the ORIGINAL USA made AAP Hydro Sponge Filter?
Sadly, may of these rip offs only come in one type, often the coarse sponge which is 2/3s of aquariums is the wrong choice over the regular/fine sponge (often both is best).