Fritz pH Lower

Fritz pH Lower gently increases acidity and reduces alkalinity to bring down the pH in freshwater aquariums. It uses a mild acid so you can dial in your target slowly and safely, which is exactly how pH should be changed. Explore more water care.

Features

• Gradually lowers pH in freshwater aquariums
• Uses a mild acid to draw down carbonate buffering
• Lets you make small, controlled adjustments
• Ideal for soft-water and blackwater species
• Pairs with pH Higher and pH Neutralizer for full control

Choose Your Size

• 4 oz for smaller tanks
• 16 oz for larger tanks and better value

How to Use

• Test pH with a reliable kit before and after dosing
• Do not change pH by more than 0.2 units in 24 hours with livestock present
• Allow several hours for the water chemistry to settle, then retest
• If pH drops too far, add Fritz pH Neutralizer to restore buffering

Specifications

Recommended Pairings

• Raise pH with Fritz pH Higher
• Stabilize at neutral with Fritz pH Neutralizer
• Browse all water care

Frequently Asked Questions

How much will it lower pH?
It depends on your water buffering, so go slow and test between doses.

Is it safe for fish?
Yes, when you change pH gradually, no more than 0.2 units per day.

Freshwater only?
Yes, it is formulated for freshwater systems.