let me know!!!!
really any amonia spike would be proof that it's not doing it's job. I'd be interested to know.
Personally i think that all of that stuff is just fish company propaganda. so I'd be interested to hear what a seasoned vet (not a fish killing newbie) has to say about it.
(I also don't believe in dechloring water so.... call me crazy but i think that it's more propaganda from the chem companies trying to sell me crap)
People on this board for instance have told me all about how my fish will die a slow horrible death. In the end they are all alive, no one has soars, etc etc. I haven't had ich in a tank in over 2 years, no fungus, no unexplained death.
(I do dechlor a new set up as the initial bacteria are less tolerant to chlorine in my mind, who knows if it's really true) but 5 tanks each get a 20% change every other week with city water straight from the tap.... (fancy plecos otos and all make it every time)
have a good one and good luck!