Tetra Gun EasyBalance pH and Alkalinity Regulator Aquarium Water Conditioner 3.38 oz Tetra is a name you can trust in the aquatics industry. With decades of proven performance and high quality products it s no wonder Tetra is the go to brand for aquatics beginners and veterans alike. As an aquarium ages the water chemistry in that aquarium changes as well. Tetra s EasyBalance formula prevents the harmful conditions that are caused by these changes. Tetra EasyBalance regulates the pH and the alkalinity (KH) of your aquarium s water. The treatment formula regulates both the pH and the alkalinity (KH) at recommended levels. With regular use of the Tetra EasyBalance formula you can help to maintain a healthy aquarium. Not only does the formula maintain proper pH and KH it adds the essential vitamins minerals and electrolytes needed for vibrant active fish. The formula can be used for all freshwater aquariums and it is recommended that it is used weekly to reduce the amount of water changes.