Protect your fish from the harmful effects of chlorine with Aqueon® AquaPacs™ Water Conditioner. When setting up a new aquarium or adding fresh water during water changes, it's crucial to neutralize any chlorine present in the tap water. Failure to do so can have serious consequences for your aquatic pets. With Aqueon's® AquaPacs™ Water Conditioner, you can easily maintain the health and happiness of your fish. This hassle-free water conditioner does not need to be measured out like a liquid water conditioner does and it cannot be overdosed. Each ball treats up to 10 gallons of water, making it ideal for new water additions and regular water changes to ensure a well-balanced aquatic environment. Spend less time worrying about water care and more time enjoying your fish with AquaPacs™ Water Conditioner.