Review on Efficient Aquarium Phosphate Remover: D-D Rowahos Delivers Crystal Clear Water by Michelle Larsen

EXCELLENT product. My phosphates were cut in half in 24 hours. ALWAYS flush or drain about a gallon and a half of this product before pouring it into the tank. It is also recommended to use a thinner mat or pillow on it. The granules are very small and can quickly penetrate the supplied black sieve. But overall, it's a great way to reduce phosphate. I run a 2 Fishes 150 reactor on a 135 gallon tank/sump.