Crystalpro Betta Minerals is a extremely concentrated and balanced mixture of minerals required for Bettas and all freshwater creatures. Contains all the minerals needed necessary for better fish health and growth. Brigthens their colors, electrolytes the water, improves respiration and makes your Betta happier, healthier and more active. Instructions: Add 1-2 drops for each liter once a week. Cautions: Keep out of reach of children. Not for human consumption. When eye or skin contact, wash with plenty of water. Keep it cool. Do not freeze. Approximately 15 drops is 1ml, a bottle cap is 7ml. Shake the bottle well before use. Do not overdose. In this case, change the water. Ingredients: Calcium, magnesium, sodium, potassium, boron, iodine and trace elements.