For small polyp and large polyp stony corals, soft corals and clams as well as problem solving/solution in a salt water tank.Coral Snow is a liquid secondary biological facilitator for elements like B-Balance or Potassium-Iodide/Fluoride Concentrate. Compatibel with all elements, also for Amino Acid and Vitalizer. Coral Snow contains among others a natural Calcium-Magnesium Carbonate mix. With just 2.5µ Coral Snow has an optimal size for absorption by SPS corals. The dosage can be put into a glass together with another product, mixed and after about 5 min. slowly into the streaming of your tank. The cloudiness in the water is harmless for all fish as well as sensitive corals.