Potassium Concentrate™ Julian Sprung’s Reef Formula replenishes the potassium concentration to help maintain optimum water quality for growth and coloration of corals. Especially beneficial in low-nutrient reef aquariums or reef aquariums using zeolites, potassium supplementation is known to promote the development of colorful pigments in Montipora, Acropora, Stylophora, Pocillopora, & Seriatopora spp. 500 ml (16.8 fl oz) bottle and 1 Gallon.
