"Koi-lo" wrote in
:

I'm going to suggest you do some partial water changes using ONLY a
product that removes chloramines and chlorine. Then watch to see if
there's an ammonia problem.... others may have other ideas.

A sal****er (two part) ammonia tester that is not based on the Nessler
method should measure the presence of ammonia despite the use of
detoxifying agents.