The Nitrates were somewere between 80-160ppm, i have test strips, and they are now around 80ppm, they are lowering just slowly, I have a valentini puffer and two false percula clowns, one black one orange, in a 29 gallon tank. as far as feeding i feed twice a day with a pinch ocean nutrition prime reef flakes and about 1/4 of a cube of mysis shrimp at each feeding.