Calcium is not the only substance needed to form the skeletal
material of corals and allow calcareous algae to grow. Carbonate and
bicarbonate are also needed and these two substances can have a major
effect on stabilizing or buffering pH levels in the aquarium in the
correct range of 8.1 to 8.4.
The total carbonate and bicarbonate concentration is also
called alkalinity or carbonate hardness and for a stable system the
alkalinity should not fluctuate by more than 5% from the optimum level
of approx. 2.8 meq/L i.e. a maximum fluctuation of 0.14 meq/L.
The Salifert test is sensitive enough to detect small changes
in levels of alkalinity, measuring in steps of 0.1 meq/L and
demonstrating a very sharp color change.
Sufficient for 100 to 200 tests.
The Salifert KH + pH buffer additive makes correction of the
alkalinity or carbonate hardness simple and does not upset the pH of the
system
Can be used for marine water, freshwater and garden pond water
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