TropicAqua Pre-Filter Sponges for 300 GPH Pump Filter Box — Compatible with Part Nos. 52231 & 52229 — Coarse and Fine Pads (Pack of 10)

Replacement sponge set designed for the TropicAqua Universal Pump Filter Box and Complete Filter Kit that use a 300 GPH pump; compatible with part numbers 52231 and 52229. This Pack of 10 contains both coarse and fine pads for staged mechanical filtration: coarse pads remove larger debris while fine pads trap smaller particles, helping to clarify water, reduce clogging and extend the service life of the filter box. The porous sponge structure also provides extensive surface area for beneficial bacterial colonization, supporting biological filtration and a healthier aquatic environment. Suitable for use in both freshwater and saltwater systems.