Seachem Vibrant Sea(TM) is a concentrated blend of salts designed specifically for marine and reef aquariums. The formulation contains: - accurate seawater concentrations of magnesium, calcium and strontium - enhanced potassium levels - proper alkalinity - pH for closed reef aquarium systems. Vibrant Sea(TM) is an anhydrous salt that can produce more saltwater from less salt and allows unparalleled uniformity between batches. As a highly soluble formulation, you can mix and use Vibrant Sea(TM) in the same day. At a specific gravity of 1.023, Vibrant Sea(TM) will yield: - pH: 8.4-8.5 - Alkalinity: 3-4 meq - Calcium: 425-445 mg/L - Magnesium: 1,250-1,350 mg/L - Potassium: 500-550 mg/L - Strontium: 8-10 mg/L Directions: - Mix Vibrant Sea(TM) with dechlorinated tap or purified water. - Use a commercial dechlorinator like Prime(R) to neutralise tap-water chlorine and/or chloramines. If the source water quality is extremely poor, purify the water with a Seachem Pinnacle(TM) RO/DI system. - To prepare small quantities, add 27g of Vibrant Sea(TM) to 1 litre of water for a specific gravity of 1.020. Add 3 g per litre for 1.023. For larger quantities, use 1/2 cup per 6 litres for a specific gravity of 1.020 or 1/2 cup per 5.25 litres for 1.023. - Stir well until thoroughly dissolved. - Vibrant Sea(TM) is then ready for immediate use. Note: Excessive mixing may result in cloudiness. Cloudiness will dissipate when the Vibrant Sea(TM) solution is added to the aquarium. For reef aquariums, 1.020-1.025 at 24?C (75?F) is recommended. 540g of Vibrant Sea(TM) is formulated to create 20 litres of saltwater at a specific gravity of 1.020. 620g will create 20 litres at 1.023.