I can't figure out this ammonia issue, folks. Currently have a 4 month old Nuvo 40. Salinity 1.026, Nitrate 0, Nitrate 10, Ammonia 8ppm. This is the third time i've tested and come up with 8ppm. Granted, I am using an API test (I know I shouldn't but it's what I have at my disposal. I religiously do weekly 5 gallon water changes. Had an issue with zero nitrate and stopped skimming to get them up. Currently have 2 smaller clowns,Royal Gramma, YWG, Pistol Shrimp, and a handful of hermits and about 10 corals. I feed once a day frozen and light. When cycled I started with Fritz turbo 9. Three weeks ago I added a bottle of pink algea (it was free so why not). I have 40 lbs or rock in the display and some ceramic media in the back that was just recently cleaned. I vacuum the sand, about a quarter of the bed, every water change. I blow off the rocks before the water change and scrub down the power heads and caddy. I cant figure out why my ammonia continue to show such high levels. There is nothing dead that im aware of in the tank. Everything in the tank seems fine, no signs of stress. Rock continues to age, has a good amount of coralline starting. Whats the deal?

