What is a potential consequence of having low water circulation in a pool?

Choosing algae growth as the answer highlights an important aspect of pool maintenance related to water circulation. When water circulation is insufficient, it creates stagnant areas where algae can easily develop. Proper circulation aids in distributing chemicals evenly throughout the pool, which helps in preventing the conditions that favor algae proliferation. Without adequate movement, nutrients and sunlight can accumulate in specific areas, allowing algae to thrive, leading to green and unsightly water.

The other options may relate to issues that can arise in other contexts but are not directly linked to the effects of low circulation. For example, high chlorine levels typically occur when there is a lack of water activity or evaporation, but they do not directly correlate with circulation problems. Increased water temperature is more influenced by environmental factors and pool design rather than water circulation alone. Cloudy water can indicate several problems, such as filtration issues or chemical imbalances, but again isn't specifically a direct outcome of low circulation in the same way that algae growth is. Hence, algae growth makes the strongest connection to the consequences of insufficient water circulation in a pool.