does any one know how much po4 is caused from unrinsed frozen food ? i use P E MYSIS and there seems to be a oily film left on the surface of my tank after feeding , its from the food . i've heard that rinsing the food cuts down on the po4 , could this be a significant sourse of po4 or just a higher level of nutrient that the fish dont eat , its too small for them to eat ,but what about the corals is it food sourse for them and noyhing to worry about my po4 reads av..01ppm . any opinions or facts would be cool !



