Description Permanent Hardness (pH): The pH describes one of the most important chemical properties of your water, the balance between acids and bases. All fish, plants, and micro-organisms react very sensitively to drastic and rapid changes to the pH value. A pH value of between 6.5 and 8.5 is ideal for nearly all freshwater fish. This can be adjusted with the included API pH UP or API pH DOWN. API water test kits will help you understand the importance of water quality. By having the correct parameters and good water quality, it will help your fish and plants live longer and healthier lives. Suitable for use in: Tropical aquariums. Cold water aquariums. For more information click here: API® | pH TEST & ADJUSTER KIT
