Keep your koi companions safe and healthy with Dr. Tim’s Aquatics Koi AquaCleanse Aquarium Cleaner. This cleaner is designed to remove toxic chemicals from tap water that could be harmful to your fishy friends—including chlorine， chloramines and ammonia. It’s formulated to work instantly and doesn’t leave behind any unpleasant smells. It’s also safe for the aquatic plants that call your fish’s habitat home. This cleaner is ideal for setting up a new koi pond or for regular water changes. Swim easy， little friends!