AquaReady Foam Sponge for FR-S Media Reactor

Maintain optimal up-flow water circulation in your fish tank with the AquaReady Foam Sponge for FR-S Media Reactor kit. This high-density replacement foam sponge set is a direct replacement for the sponges included with AquaReady FR-S media reactor setups. Designed specifically to fit your compact internal up-flow filter, these mechanical filtration pads prevent granular media like GFO, activated carbon, or biopellets from escaping into your sump or display tank. Regular maintenance with fresh filter foam ensures clean aquarium water and maximum contact time between your reef tank system and your chosen chemical filter media. Each specialized FR-S kit includes 4 sponges featuring two of each unique density to provide comprehensive, multi-stage debris trapping.