Aquarium Water Conditioners and Purifiers / API pH Down 473mL

Item # APH19a

Aquarium pH adjuster - Professional Size

API pH DOWN is a reliable solution for reducing high pH in freshwater aquariums, especially in areas where tap water is naturally alkaline. Fish waste, uneaten food, and mineral‑rich water can cause pH to rise or rebound, stressing sensitive species. This phosphate‑free formula helps bring pH back into the ideal range for tropical fish, goldfish, livebearers, and Amazonian species. Use during setup, water changes, or whenever pH drifts upward. Regular testing ensures stable, healthy aquarium conditions.

pH measures how acidic or alkaline aquarium water is. A pH of 7.0 is neutral; values above are alkaline and values below are acidic. Different fish thrive at different pH levels, so understanding your tank’s pH helps prevent stress and sudden chemistry changes. High pH is common in areas with mineral‑rich tap water or in tanks where waste builds up.

Key Features

• Safely lowers high pH in freshwater aquariums
• Phosphate‑free formula that won’t promote algae
• Helps counter pH drift caused by waste and mineral‑rich tap water
• Suitable for tropical fish, goldfish, livebearers, and Amazonian species

Specifications

• Type: Freshwater pH‑reducing solution
• Formula: Phosphate‑free
• Size: 473 mL (16 fl oz)
• When to Use: Test pH weekly; use pH DOWN when levels rise above the ideal range
• Dosage: 1/2 teaspoon (2.5mL) for each 95 Litres of aquarium water, for larger aquariums add 1 tsp (5ml) for each 190L of water and test with API pH Test kit before redosing
• Use Cases: New tank setup, water changes, pH correction
• Notes: High‑buffered water may require repeated dosing due to natural pH rebound

AU$39.95