Ultimate is a convenient, liquid single phase, full-function water conditioner that has been scientifically formulated for use in koi and goldfish ponds. Ultimate should be used (1) when conditioning new water for ponds, (2) prior or during water additions to ponds, (3) before adding  new fish or plants, and (4) when transporting koi or goldfish. It is VERY important to use Ultimate when adding water to a  pond that contains CHLORAMINES. Conventional dechlors will detoxify the clorine in the CHLORAMINES but do nothing to the ammonia released from the CHLORAMINES. Ultimate will detoxify both the chlorine and the ammonia in  CHLORAMINES.