Easy to dose liquid formulation that provides the essential magnesium to algae, coral reef fishes, corals and many invertebrates require. In natural and balanced coral reef environment, essential Magnesium as important as Calcium is essential in the healthy functioning of the all kinds of coral reef organisms, especially good for almost kinds of marine large and mega algae, coral, anemones, teleost and invertebrates. It provides complex active Magnesium which from nature and necessary to spur coral tissue growth and coloration, and full of silicates and calcium too. Ideal ingredient for small polyps stony corals, propagating soft corals, octo-corals, and colonial anemones. Induce the polyps to develop the symbiosis with microalgae and build the coral reef by magnesium/calcium bio-accumulation. ● Easy to dose liquid formulation that provides the essential ● Magnesium to corals and many invertebrates require. ● OTTO essential Magnesium Plus can neutralize the toxic acidity of environment as calcium is alkaline base. ● Full of exotic trace elements, vitamins and nutrients for growth and health also. To induce the growth of corals, anemones, gorgonians, and coral-like marine algae, and balance the water quality. Ingredients: Magnesium Chloride, Magnesium Sulfate, Potassium Chloride, Trace Elements. Directions: Add 2ml per 60 liters or 15 gallons of tank capacity each and twice a week. Depending on animal load use +-10% standard dosage. Remove the active carbon substrates and stop the protein skimmer and ozone for at least 4 hours after add. Ultra concentration, please mix well before use. For saltwater and coral reef ornamental aquarium use only.