What is a common sign of improper water balance in a pool?

A common sign of improper water balance in a pool is the corrosion of pool fixtures. When the water's chemistry is not balanced—especially pH and alkalinity levels—metal fixtures can become damaged due to the acidic nature of the water. This can lead to all sorts of issues, including etching of surfaces, staining, and eventual failure of components like ladders, handrails, or pumps.

While cloudy water, foul odors, and excessive algae growth are also indicators of pool water issues, they are more closely associated with sanitation problems and contaminants rather than direct indicators of water balance. Corrosion specifically highlights a chemical imbalance affecting the materials within the pool system. Properly balancing pool water is essential not just for water clarity and hygiene, but also for the longevity of the pool's equipment and fixtures.