API pH Down Liquid in the compact 118mL size is ideal for aquarium hobbyists with smaller tanks or occasional pH adjustment needs. Its concentrated formula ensures efficient pH regulation while minimizing product usage. This smaller bottle size is convenient for precise dosing and storage in limited spaces. API pH Down Liquid - 118mL provides a cost-effective solution for maintaining optimal water parameters in aquariums of various sizes. Offers a convenient size for smaller aquariums or occasional pH adjustments, providing precise control over water chemistry. Helps create an acidic environment suitable for sensitive aquatic organisms, promoting their health and well-being. Ensures compatibility with freshwater and saltwater aquariums, offering versatility and reliability in maintaining optimal pH levels for aquatic life.