While tap water is safe for people, it can be dangerous for your fish. Tap water contains chemical disinfectants such as chlorine that can be harmful to an aquarium. One way to clear unwanted chlorine is by aerating water overnight with a filter. However, this method can be less effective than pre-treating it with a liquid water conditioner.  A water conditioner detoxifies tap water, making it instantly safe for pet fish. This product removes unwanted chlorine and chloramine while also treating water containing heavy metals.  Order your go-to water conditioning products and all your essential fish care products via Instacart today.