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CrystalClear® pHGuard,™ 2 Pounds


Overview - pH Buffer

Koi Fish in Water

When used as directed, CrystalClear pHGuard will stabilize pond water pH and maintain buffering capacity as safe levels between 80-240 ppm. CrystalClear pHGuard will help prevent wide pH swings which are typical from morning tonight. CrystalClear pHGuard makes pond water safe for fish and plants and helps keep the water balanced in the hot summer months. Keeping a properly buffered system is essential for the completion of the nitrification process, which allows harmful ammonia to be converted to nitrite and then to nitrate.

How to Use

2 Pound
Application Granular Powder
Temperature Restriction None
Treats up to 8,000 Gallons
Shelf Life 3-Years


Pond Size (Gallons)
(Up to 3 Days)
Up to 1,000 Gallons 4 Ounce
Up to 2,000 Gallons 8 Ounce
Up to 4,000 Gallons 16 Ounce
Up to 8,000 Gallons 32 Ounce

Please note: Above are recommendations. Always read the product label.

 Routine Application Rate

Apply pHGuard once a week and after each water change.

For Best Results

pH is typically at dawn and highest at dusk so it is important to test pH levels at the same time of day.

Product Notices

Drastic changes in pH may cause algae blooms, fish and plant stress, and possibly death. Safe pH ranges for pond fish and plants is 6.5 - 8.0.