phocoena
Fish Fanatic
My own tap water tests at zero before I dechlorinate it but tests at 0.5 ppm after I dechlorinate.
How do you suggest that tap water that has no ammonia in it, i.e. reads zero, suddenly acquires 0.5ppm ammonia? Are you suggesting that the dechlorinator adds ammonia?
What test kit do you use?
Oldman has Chloramine. The prime breaks it down into it's components and then ammonia will become "visible".