Aquatic Experts FilterFirst Aquarium Filter Floss is high-loft polyester filter floss, made to capture fine particles — uneaten food, fish waste, and detritus — as water passes through on its way to the sump. You cut it to fit your filter tray or overflow box.
When flow slows, pull it out, rinse it, and reuse it; the heavy stitching holds up to repeated cleaning instead of falling apart after a few rounds. It works in freshwater, saltwater, and reef sumps.
Aquatic Experts was started by an aquarist who spent 25 years running an aquarium store and service company, and makes its filtration media in the USA.
