These sponge cartridges, designed for AQUAEL filters, consist of meticulously chosen sponge material infused with a phosphate absorbent. The cartridge effectively captures phosphates present in the water, all while ensuring the complete safety of fish, aquarium invertebrates, and plants.

This system operates with selectivity, exclusively targeting phosphates without trapping beneficial compounds like micronutrients and vitamins found in the water. Importantly, it does not release any harmful substances into the aquarium. Over time, the cartridge naturally undergoes wear and tear. To ensure its consistent performance, it is advisable to replace it at least every four weeks