New Last items in stock Integratori marini copy of Red Sea Reef Foundation Magnesium C 500ml RS-22755 €169.82 This program provides biologically balanced levels of basic elements (calcium, carbonatiemagnesio), and guarantees optimal water conditions for sustainable development of the reef and corals. Content: mixture of magnesium salts. Dosage: 1ml will increase the level of Mg of 100 liters (25gal) of 1ppm Add to basket