Safe For All Reef TanksAll InvertebratesDesirable Macro Algae Nitrifing Bacteria And Fish. For Best Results Turn Off Uv Sterilizer Or Ozonizer And Discontinue Protien Skimmer. Removechemi Pure Or Carbon Filtration For 24 Hours Following Each Treatment. It Is Adviisble To Do At Least A 20 Water Change After Full TreatmentRemoves Red SlimeBlack Bluegreen And Bubble Producing Algae. Eliminates Dangerous Trapped Organic Sludge. Clarifies Aquarium Water To Crystal Clear And Promotes Ideal Enzyme Balance. Contians No Phosphates Algicides Or Erthromycin SuccinateYou Must Use An Air Stone When Using This Product And We Highly Recommend Using The Wooden Types Available. Please Put Your Air Stone In Your Tank Befor You Start To Dose The Tank.