Phosmax
Sponge cartridges for AQUAEL filters made of carefully selected sponge saturated with phosphate absorbent. The cartridge efficiently absorbs phosphates from the water. It is absolutely safe for fish and aquarium invertebrates as well as for plants.
It works selectively without capturing useful compounds from the water, such as micronutrients and vitamins. It does not release any toxic substances into the water. Over time it becomes gradually worn out. To maintain its continuity, it is recommended to replace it at least once every four weeks.