Check the listing for details. EasyPro Natural Phosphate Binder -- For Use in Ornamental Ponds. Condition: New. Listed at 44.99 USD. EasyPro Natural Phosphate Binder is a natural plant-based powder formulation that provides a non-chemical alternative to using aluminum sulfate (Alum) in Koi ponds and water gardens.Binds problem-causing phosphates and buffers pHProvides approximately 70 beneficial trace minerals Provides minor flocculation (settling) of suspended particlesApplication Instructions Can be used all season long. Best if mixed with several gallons of pond water to make a slurry, then spread around edges of pond. In problem ponds, a double dosage can be used. Best results if used with All Season Pond Bacteria, either applied in alternate weeks or at the same time as bacteria treatments.ApplicationTreatment DosageInitial Two Weeks or Murky Water1oz per 500 gallons, twice per weekPond Maintenance1oz per 500 gallons every 1-2 weeks