Fritz Liquid Test Kits – Alkalinity kH

Fritz Liquid Test Kits – Alkalinity

East to Read Instructions
Essential for a Healthy Tank
Accurate in both Fresh and Saltwater

Exp Date # JAN-2027

Description

Description

Fritz Liquid Test Kits – Alkalinity

Carbonate hardness, or alkalinity (KH), is the measure of both carbonates and bicarbonates present in the water. The KH value of your water is important to know, as the carbonate hardness plays a significant role in the water’s pH and the water’s buffering capacity to keep that pH stable. KH naturally falls over time with the introduction of CO2 and other acids, and nitrification. Reverse osmosis water should be buffered with carbonates before use to raise and maintain KH. Some municipal tap water can have variable KH levels throughout the year and should be checked regularly. In saltwater tanks, KH can be tested to monitor the proper ionic balance when dosing.

Soft water fish, like Discus and other South American cichlids – 0 to 4 dKH (0 – 70 ppm)
Tropical community fish, like tetras and betta – 4-8 dKH (70 – 140 ppm)
African rift lake cichlids – 8 to 12 dKH (140 – 215 ppm)
Marine species – 8 to 12 dKH (140 – 215 ppm)

Directions & Dosage

To remove childproof safety cap, push down while turning.

  1. Fill a clean test tube with 5 ml of water to be tested (to the line on the tube).
  2. Holding KH Reagent Solution dropper bottle upside down in a completely vertical position add one drop at a time. Cap the test tube and gently shake between drops. Ensure you count the drops as they are added.
  3. The test is complete when the water in the test tube, after having been gently shaken, turns from blue to yellow. If you have difficulty discerning the color after the first drop of test solution is added, remove the cap from the test tube and while holding it over a white background, look down through the tube.

The KH value is determined by the number of drops of reagent that must be added to turn the water in the test tube yellow. See conversion chart to determine KH.

Corrective actions:

To increase the KH of your water, add Fritz pH Higher. For a more significant KH increase for African cichlid systems, add Fritz Rift Lake Cichlid Buffer as needed. Fritz recommends a minimum of 4 dKH (80 ppm) for nitrification when using FritzZyme 7 or FritzZyme Turbo Start 700 bacteria. 

To decrease the KH of your water, add Fritz pH Lower, or perform partial water changes.

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Fritz Aquatics products are used by zoos, public aquarium exhibits, aquaculture professionals and home aquarium hobbyists. Our aquarium products have been trusted by hobbyists and professionals for over 30 years.

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The Fritz Pet Products Division began in the early 1970s with the manufacturing of all-glass aquariums and processing aquarium gravel. Today, the specialty division manufactures hundreds of pet products with an emphasis on the aquatics market, developing innovative products such as FritzZyme 7 & 9, TurboStart and FritzGuard. The Fritz Aquatics line is marketed to major distributors and pet retailers throughout the U.S. and internationally.

Fritz Aquatics also manufactures products for large aquatic facilities, zoos and the largest public aquariums in the world. In 2014, Fritz Aquatics secured an exclusive royalty agreement with Sergeant’s Pet Care Products, Inc. for their Mardel and Aquarium Product lines.

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