Contains 7 species of Coralline Algae (pink, creamy light pink, fuschia, hot pink, lavender, and magenta). Species of coralline do slightly shift colors depending on their environment especially with differences in lighting and magnesium levels but these species of coralline will generally stay within these shades of pink. Developed in a laboratory and contains actual live algae spores. Other products are simply a mixture of calcium and magnesium. Will also aid in establishing your tanks biological filtration, by providing fresh living bacteria. Our Pink Fusion algae strains are highly epiphytic stains that will help to outcompete other nuisance algae and diatoms. Effective in improving water quality by controlling ammonia and nitrite levels. Reef safe for all marine fish and corals and our holding tanks are 100% fishless so there is no chance of parasites. This is a live product and must be used by the date printed in the bottle. Every bottle is bottled fresh on the date that it ships and has a 21 day shelf life. For Saltwater Use Only. 1 Bottle Treats up to 50 Gallons. Developed and manufactured by ARC, a licensed aquaculture laboratory permitted and licensed under the National Oceanic and Atmospheric Administration, the Department of Agriculture, and the Florida Fish and Wildlife Conservation Commission. 1 Bottle per each 50 gallons of tank volume (including sump) is needed for best results. You can combine both products to give you a total of 14 species. Please ensure to read the included directions and tips before use.