The pH level of the water in a fish tank is important for the health of the fish. The pH scale measures the acidity or alkalinity of water, with a pH of 7 being neutral, a pH below 7 being acidic, and a pH above 7 being alkaline. Guppies prefer slightly alkaline water, with a pH between 7.0 and 8.0. If the pH of the water is too acidic or too alkaline, it can cause stress and health problems for the fish.
To maintain the proper pH level in a fish tank, it is important to use a water conditioner that neutralizes acids and bases. Water conditioners also remove harmful chemicals like chlorine and chloramines from the water, which can also be harmful to fish. By regularly cleaning the tank, filtering the water, and using a water conditioner, you can help to maintain a healthy environment for your guppies and keep them happy and healthy.