I'm in the third week of cycling my 55 gal tank, and I've done a few water changes (50% of so over the last week to bring the Nitrites down because they were way over the 5.0 PPM max the API Freshwater Master Kit can detect.) My Ammonia levels in my tank are close to 0 (0.1-0.2 PPM) guessing by the color of the test tube. I had never measured the Ammonia in Tap water because I guess I ASSUMED Tap water wouldn't have any. I filled a test tube up to the line with tap water and got a reading of 0.5 - 0.75 PPM. This kinda blew my mind, is this even safe? I don't have fish yet but once my tank cycles and I perform water changes, wont this add Ammonia to my tank? or will the Bacteria handle this Ammonia increase from the tap water quickly enough to keep the fish safe? I currently finishing up using API Stress Coat when adding water during water changes. I have a bottle of PRIME which I will use once the API Stress Coat is used up. On the label of the PRIME, it mentions it handles Ammonia as well. Does API Stress Coat neutralize Ammonia as well?