pH is the measure of acidity or alkalinity of water. A pH reading of 7.0 is neutral, a pH higher than 7.0 is alkaline, and a pH lower than 7.0 is acidic.
A healthy pond depends on proper pH balance. Many factors can significantly alter pond water pH, creating an unhealthy environment for pond life. Acid rain, minerals leaching from soil or rain run-off, decomposing plants and animal waste can all contribute to unstable pH levels in the pond.
pH in Ponds
A pH of 7.0 is considered ideal for plants and fish in the pond. Some species of pond plants, such as waterlilies and hyacinths, thrive in slightly acidic water below 7.0. Pond fish prefer an alkaline pH above 7.0. Therefore, an acceptable pH range is 6.8 to 8.2
Extreme pH levels above 8.2 or
Problems of Low pH
Many ponds tend to turn slightly acidic (between 6.8 and 7.0) as the pond life
develops. A pH below 6.8 will stress pond inhabitants. A low pH may be caused by increased carbon dioxide concentrations, overstocking with fish or poor surface agitation. Proper fish stocking, as well as adequate pond filters or fountains, will correct carbon dioxide build-up and help stabilize pH.
A low pH (acidic water) may also be caused by decomposing organic matter, solid waste from fish and birds, and decaying vegetation.
We can help you to keep your pond with the correct pH level;