OK, this nitrate peak is a good sign. If only ammonia, per se, if reacting with your test kit then it will plummet to a reading of ZERO. The reason for this is that the bacteria will "surge" to consume the inital amount of ammonia present and then their metabolic profiles will retreat to a steady state in which they are essentially oxiding new ammonia as quickly as it is excreted by the fish. Hence, the ammonia never has a chance to accumulate. The nitrate can only be derived from a single starting material...the ammonia (via nitrite). The appearance of a healthy nitrate peak can only mean that the ammonia is being oxidized (presumably, by the Stability). Continue with the Stability inoculation regimen for another three days and continue feeding your fish and observing them. At the end of eight days, perform a 30-40% wc (whatever is required to drop the nitrate level to , say 10 ppm). Continue to dechlorinate with Prime. Take another set of water parameter readings...ammonia, nitrite and nitrate. The ammonia is produced by the fish urinating into the water.
