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Calcium alone cannot form the skeletal material of corals and allow calcareous algae to grow. Some other substances are needed as well.
A few other constituents are carbonate and bicarbonate. These two substances also have a major impact on the stabilization of the pH in the proper range of 8.1 – 8.4. Such stabilization is also called buffering.
The total carbonate and bicarbonate concentration is also called carbonate alkalinity or carbonate hardness.
The only difference between alkalinity and carbonate hardness is a conversion factor.
NSW has an alkalinity of approx. 2.7 meq/L or approx. 7.5 dKH when expressed as carbonate hardness.
For a stable system the alkalinity or carbonate hardness should have a value similar to NSW or slightly higher and should preferably not fluctuate by more than 5%.
This means a maximum fluctuation of 0.14 meq/L or 0.4 dKH.
Therefore an alkalinity test kit should be capable in measuring in steps smaller than 0.14 meq/L.
The Salifert KH/Alk test is very straightforward. It measures in sufficient small steps of 0.1 meq/L or 0.3 dKH with a sharp color change.
This makes detection of important yet small change possible.
The kit can perform approx. 100 - 200 measurements.
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| 2 Customer Reviews |
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Average Customer Rating
 5.0
out of 5 100% recommend it to
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Great product
by
eddie
from
norwalk ct
on
9/22/2009
Recommends it to Friends:
Yes
The best test kits made
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Salifert KH/ALK test kit
by
rick
from
new york
on
11/12/2008
Recommends it to Friends:
Yes
Great test kit. I would highly recommend to anybody who's interested in accurate results.
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