Siliphos is an iron hydroxide-based, effective phosphate and silicate remover for saltwater and freshwater aquariums. The wet granulate has an extremely high binding capacity and reliably solves phosphate and silicate-caused algae problems (smear and thread algae). Suitable for any filter type.

Siliphos is a fine-grained material that has been used successfully in industry and water management, drinking water treatment and wastewater treatment for years. Its highly active chemical property of adsorbing large quantities of phosphates makes it an ideal filter material for aquaristics. In the aquarium, phosphates are created by the decomposition of organic substances, but also by excessive feeding, plant fertilizers or decorative materials containing phosphate. Phosphates can also get into our aquarium by changing the water with tap water containing phosphate. Phosphate is an essential building block for living organisms, but is harmful in high concentrations. In seawater aquariums, increased phosphate levels inhibit the lime synthesis of hard corals and calcareous red algae. Due to the nutrient enrichment, zooxanthellae of zooxanthellate corals can multiply so much that they cover the natural color pigments of the coral. The corals turn Braun . Another indication of increased phosphate and silicate (silicic acid) concentrations is the growth of annoying red or brown algae, which often form a greasy film over the decoration in the aquarium and can threaten the life of various organisms. A PO4 content of more than 0.1 mg/l cannot be tolerated in a modern coral reef aquarium. Siliphos is also used in seawater aquariums to bind unwanted silicates. In a freshwater aquarium, the upper limit should be 0.3 mg/l. Increased phosphate concentrations are often to blame for various plagues of algae, poor plant growth and ailing fish. 840 ml for up to 3,360 l (at 0.5 mg PO4/l).