Reeflowers Betta Bonny contains the elements Betta fish need. In terms of mineral content aquarium water is usually less than ideal for fish to live in compared to the water of their natural habitats. When living organisms cannot get the minerals necessary for their skeletal development then their reproductive and vital functions weaken their development is slowed their colors are dulled and their health deteriorates. Reeflowers BettaBonny helps provide the elements that fish need for healthy development and vivid colors. It helps promote natural habitat conditions. Recommended dosage: Add 1 ml per 10 lt of water each week. The dosage is determined based on the assumption that at least % 30 of the water is changed each week.