DVH Aquatics PO4x4 Phosphate Remover 250 ml


PO4x4 is a new uniquely engineered polymer mini pellet that is bound to a very pure form of FeOH2 (GFO) that will absorb phosphates in your aquarium without leaching any iron ions into your tank. The Iron based pellets can absorb up to 4 times the amount of phosphate than standard GFO. For best results it is highly recommended to use a fluidized reactor when using PO4x4. Canister filters can be used as well but will not be as efficient.


  • 500 ml will remove 3 ppm of phosphate and silicate from roughly 16.000 liters (4226 gallons) of fresh water or 8.000 liters (2113 gallons) of marine water.


Note: An ammonia kind of smell is normal when opening a new package. This isn’t ammonia but a processing smell during etching the iron on the polymer pellets. Overdosing can cause a negative effect in your tank due to rapid removal of phosphate and chemistry changes. It is recommended to use a small amount and gradually increase the amount of PO4x4 used, while monitoring the phosphate levels in your aquarium.