Salifert Carbonate Hardness / Alkalinity Test Kit - Profi Test

For most reef aquariums, an ideal KH (Carbonate Hardness) range is between 8 and 12 dKH. This provides sufficient buffering to maintain stable pH.

The ideal Alkalinity range for a reef aquarium is typically between 7 and 11 dKH (or 2.5 to 4.0 meq/L). This parameter is crucial for coral skeletal growth.

It is recommended to test KH and Alkalinity at least once a week, or more frequently if you are making significant adjustments to your tank's chemistry or observing changes in coral health.

No, this Salifert test kit is specifically formulated and calibrated for marine and reef aquarium water parameters. Freshwater KH and Alkalinity testing often require different reagents and ranges.

When stored properly in a cool, dark place with the caps tightly sealed, reagents typically remain effective for 6-12 months after opening. Check the product packaging for specific expiration dates or manufacturer recommendations.

The transition from blue to red (or a similar endpoint color depending on the specific reagent used) indicates the completion of the titration. The number of drops used to reach this point determines your KH/Alkalinity value.

Ensure you are adding reagents drop by drop and swirling gently between each drop. If the color change is too fast, you may have a very high KH/Alkalinity; try using a smaller water sample and multiplying the result accordingly. If too slow, check reagent freshness or the accuracy of your drop count.

Verify that you are using a clean test tube and the same volume of aquarium water for each test. Ensure reagents are stored correctly and are not expired. Perform the test at the same time of day if possible.

Perform the test on a white background under good lighting. Ensure the water sample is clear and free of debris. If you have vision issues, consider asking another person to observe the color change.