Give your fishy friends the gift of crystal-clear water with Dr. Tim’s Aquatics Reef Clear-Up Aquarium Cleaner. This aquarium cleaner is a completely natural water clarifier for your reef tank. It’s designed to clear up cloudy water with the use of beneficial bacteria. It doesn’t contain any chemicals that could harm your fishy pals or corals and it’s formulated so it can’t be overdosed. This cleaner is a quick and effective way to get your tank’s water crystal clear and enjoyable for you and your finned friends!