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7.4.5. Phosphate Remover

Phosphate removing granules work! Iron and aluminum phosphates are simply very insoluble. So, these products will remove phosphates from the water. The use of phosphate removing granules are indicated where a phosphate test indicates high phosphates are causing an algae bloom. “Blue-green algae” blooms are very commonly caused by high phosphate in the water.

So if a 95% water change doesn’t remove the phosphate, phosphate removing granules are a very good option.