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A pH measurement is one of the most important measurements in an aquarium. It is extremely important to compare the measured pH value to other measurements of previous days, always taken at the same time, since the pH value varies greatly during the course of the day.
The pH value inside the aquarium should be kept as constant as possible. One option to do so, is to stabilize KH in the range of 7-10°dH. The alkalinity (KH) buffers the pH value and thereby avoids pronounced pH fluctuations.
A pH value between 8.2 and 8.5 is considered optimal for a salt water aquarium. Many organisms will react with high sensitivity to large variations of the pH-value An overly large drop or rise should be avoided whenever possible. Therefore a regular check of the pH-level is elementary necessary to document and to avoid any negative impact on our aquarium inhabitants.
