For everyone jumping on the band wagon, the OP is not just doing this because there is a trace of ammonia. There appears to be an issue with their water supply and we are hoping that by filtering the water through carbon and zeolite, we can remove any chemicals that might be killing her fish.
Having floating plants in the holding containers should remove the ammonia but if there are heavy metals or some sort of contaminant, it needs to be filtered with carbon before being added to the tank.
Having floating plants in the holding containers should remove the ammonia but if there are heavy metals or some sort of contaminant, it needs to be filtered with carbon before being added to the tank.