If you have chloramine, you need to address that, not just the chlorine. It was explained to me that Chlorine is bonded to ammonia to create chloramine (that prevents the chlorine from evaporating) so unless that bond is broken, neither chemical should be addressed singularly. ( For example, chlorine remover will not remove the chlorine portion of chloramine and just leave the ammonia.)
Another issue may come from the float valve. If the water level goes down due to evaporation, the float valve will add water but if your chloramine remover isn't activated, that could lead to a problem, especially is you have sensitive fish.
If I may suggest, get yourself a 55 gallon plastic drum ( or some other cheap large water receptacle to hold water) that has already been dechloramined and run your float valve from that. This way, you won't have to worry about the chemical parts of the water change, you'll only need to address the water in the drum maybe once a week or so and if you just run an airstone into it, the water will be oxygenated as well.