FritzPond Alk Boost

  • Safely raises and maintains carbonate hardness (KH)
  • Contains a complete spectrum of buffering agents, not just sodium bicarbonate
  • Prevents pH crash
  • Aids nitrifying bacteria in reducing nitrite
  • Phosphate-free
  • Prevents pH levels from bottoming out
  • Promotes fish health

About FritzPond Alk Boost

Fritz Pond Alkalinity Booster is a safe and effective way to raise pond alkalinity. Some buffer products use only sodium bicarbonate to raise alkalinity, which can cause a dangerous “pH bounce”. Fritz Pond Alkalinity Booster contains a full spectrum of buffering agents, helping to prevent “pH bounce.” Alkalinity is the measure of the ability of water to hold a pH of 7.0 or above. Low alkalinity levels may result in pH fluctuations, sometimes severe enough to harm or kill fish. In addition, alkalinity levels below 80 ppm will prevent nitrifying bacteria from effectively reducing nitrite levels, stressing and endangering fish.


Directions & Dosage

1 tablespoon per 120 U.S. gallons (454 L) / 1 cup per 2,000 U.S. gallons (7,570 L)

Test total alkalinity in pond before use. If pond reads below 120 ppm, add 1 cup per 2,000 gallons of water or one tablespoon per 300 gallons. Wait two hours, retest alkalinity levels, retreat if necessary until desired level is reached. Limit change in alkalinity to 40 ppm per day or less. For best results, spread dosage over several days. Ideal alkalinity is between 120−240 ppm. Do not exceed 400 ppm.

Pond Alk Buffer Calculator


Size Treats Item Number
20 oz. jar 1.25 lbs 54020
64 oz. jar 4 lbs 54064
1.25 gal bkt 10 lbs 54125



See below for frequently asked questions regarding FritzPond Alk Boost.

  • Will Pond Alkalinity Booster cloud my water?

    It might cloud your water slightly for a day or less depending upon how much calcium your system needs, and how good your filtration system is. Some people experience no clouding; by putting the product directly into the filter intake in a gradual way over a few hours. To have a truly soluble calcium carbonate, some clouding is inevitable.

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