Tropic Marin All-For-Reef is a revolutionary approach to dosing, combining calcium, alkalinity, and other trace elements into a single, easy to use solution. Its no longer necessary to maintain two, three, or four solutions, or a complicated reactor. All-For-Reef is a balanced source of calcium and carbonate hardness, released through natural biological processes, along with a mix of trace elements. No mixing, no gas cylinders, no fuss. Features Complete single solution No byproducts (e.g. sodium chloride) No excess carbon dioxide Dosing pump ready No mixing required Doesnt alter salinity or ionic balance Specifications (per 500 mL) as below: Carbonate Hardness Concentration: 2,800 dKH Calcium Concentration: 20,000 mg Ca Magnesium Concentration: 950 mg Mg In addition to the calcium, alkalinity, and magnesium, All-For-Reef comes pre-mixed with the same elements used in their Trace A and Trace K A- ELEMENTS - contains anions of the trace elements bromine, fluorine, iodine, lithium, molybdenum, selenium and vanadium in pure mineral form K+ ELEMENTS - contains cations of the trace elements barium, chrome, cobalt, iron, copper, manganese, nickel, strontium and zinc in pure mineral form Instructions: Start with a daily dose of 5 ml of All-For-Reef per 100 liters (26 US-gal) of aquarium system volume. Increase the daily dosage ? by continuous control of the alkalinity ? weekly by 2.5 ml per 100 liters (26 US-gal) of aquarium system volume, until a constant carbonate hardness of 7 to 9 °dH is reached. Do not exceed a maximum daily dose of 25 ml of All-For-Reef per 100 liters (26 US-gal) of aquarium system volume.