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Free standard shipping on orders over $99
Terms and Conditions Apply!
We can ship to any address in Australia and New Zealand. Note that there are restrictions on some products, and some products cannot be shipped to some locations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full kilo.
API pH DOWN is a fast-acting, liquid solution formulated to safely lower high pH levels in both freshwater and saltwater aquariums. Maintaining an appropriate and stable pH is critical to the health of aquatic life. This easy-to-use formula helps create a more balanced, less stressful environment for fish, plants, and invertebrates that thrive in slightly acidic conditions.
Fast pH Reduction – Quickly lowers aquarium pH levels for immediate correction of high pH conditions.
Safe for Aquatic Life – When used as directed, it is safe for all fish, plants, and invertebrates.
Simple Liquid Application – Easy-to-dose liquid format makes pH adjustments precise and hassle-free.
Versatile Use – Suitable for both freshwater and saltwater environments.
Reduces Stress – Helps prevent fish stress and illness by keeping pH levels stable and within species-appropriate ranges.
Test Water First: Use an aquarium pH test kit to determine the current pH level.
Dosage: Add 1 drop per gallon (3.8 L) to lower pH by approximately 0.1 units.
Apply Gradually: Make changes slowly over time to avoid sudden fluctuations that can stress or harm aquatic life.
Monitor Closely: Re-test after each dose. Repeat if necessary until the desired pH level is reached.
Maintenance: Continue monitoring regularly and adjust as needed, particularly after water changes or the introduction of new elements.
118ML Bottle – Ideal for small to medium-sized aquariums or occasional adjustments.
473ML Bottle – Great for large tanks or frequent pH control needs.
Use for High pH Water: Recommended when aquarium water is consistently above the ideal pH for your fish species.
Avoid Overcorrection: Always make pH changes gradually, as abrupt drops can be harmful.
Combine with Good Practices: Regular water testing, routine maintenance, and proper filtration enhance the effectiveness of pH control.
Ideal for Species Requiring Lower pH: Perfect for aquariums with species like Discus, Neon Tetras, and Angelfish that prefer slightly acidic water.
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