Kent Marine Power Phos 150g

Provides the most effective means of removing phosphate and silicate available; never releases them back into the water when exhausted, and requires very little physical space in the filtration system. More effective than similar products sold in dry form. For best results, use as fluidized media with the Kent Phos Reactor. Each 150 grams will reduce up to 1.0 ppm phosphate in 150 gallons of saltwater or 300 gallons of freshwater.