Brightwell Aquatics Potassion Concentrated Potassium Solution Primarily for Reef Aquaria Housing SPS Corals Potassium Solution is a highly-concentrated ionic potassium solution. Provides potassium, an important component of aragonite (the mineral secreted as skeletal material by corals and other reef-building marine organisms), complexed into pigments that enhance blue coloration of some small-polyp stony corals, important to proper neurological function, and depleted in marine aquaria by livestock. 80,000 ppm K; considerably stronger and more economical than competing potassium products. Product Features: Highly-concentrated ionic potassium solution. Provides potassium, an important component of aragonite (the mineral secreted as skeletal material by corals and other reef-building marine organisms), complexed into pigments that enhance blue coloration of some small-polyp stony corals, important to proper neurological function, and depleted in marine aquaria by livestock. 80,000 ppm K; considerably stronger and more economical than competing potassium products. May be used to combat potassium depletion that often accompanies the use of zeolite-based filtration methods employed to maintain ultra-low-nutrient aquaria. Formulated by a marine scientist . Item Specifications: Size: 17 oz/ 500 ml 67.6 oz