Two Little Fishies` new formula supplies amino acids that corals need to build their skeletal architecture. Corals, like other cnidaria, have a special ability to uptake dissolved amino acids across their entire surface. Closed system aquariums with protein skimming and other ULN (ultra-low nutrient) filtration methods deplete amino acids that are vitally important for coral health. Corals become more colorful within days due to the extension of the growing margins when AcroPower is used. Directions Shake well, then add the desired amount to a high flow area of the tank for rapid dispersion. Dose 5 mL per 25 gallons (94.6 L) once per week, or use a dosing pump to add slowly the same amount divided into daily increments. Store in cool, dry place - Refrigeration not required.