pH levels in pond water are critical as they affect the health and biological processes of aquatic life. A pH range of 6.5 to 8.5 is generally suitable for most ponds, though specific requirements may vary based on the inhabitants. If the pH is outside the desired range, it can be adjusted using products specifically designed to raise or lower pH safely. Incorporating natural buffering agents, such as certain substrates or rocks, can also help stabilise pH levels. However, any adjustments should be made gradually to avoid stressing pond life.