Get your aquarium pH levels in check with this 16 oz. bottle of API pH UP Aquarium pH Treatment! Specially formulated for fish and aquariums, this treatment is designed to raise pH levels for a healthy aquatic environment. The multi-colored 31B model is manufactured in the US by API and comes with a unit quantity of 16. Whether you're a seasoned aquarium owner or just starting out, this pH treatment is a must-have for maintaining optimal water conditions. Suitable for all pet fish and aquariums, it's a reliable choice for keeping your aquatic pets healthy and happy.