API pH Down – 118 ml | pH Adjuster for Freshwater Aquariums

API pH Down is a reliable solution for lowering pH in freshwater aquariums. High pH levels can stress fish, inhibit nutrient absorption, and disrupt biological filtration. This phosphate-free formula gently reduces pH by neutralizing carbonate hardness, creating a more acidic environment preferred by many tropical species. It’s safe for fish and plants and won’t cloud your water.

Key Features:

• Volume: 118 ml (4 fl oz)
• Quickly lowers pH in freshwater aquariums
• Phosphate-free – won’t promote algae growth
• Safe for fish, plants, and biological filters
• Ideal for Amazonian species like tetras, angelfish, and rams

Usage Instructions:

• Test aquarium water pH before use
• Add 1 ml per 10 U.S. gallons (38 L) of water
• Re-test pH after 24 hours and repeat if necessary

Applications:

Recommended for community tanks, planted aquariums, and breeding setups where stable, slightly acidic water is essential. Use in conjunction with API pH Test Kit for accurate monitoring.