What are common signs of poor water circulation in a pool?

In evaluating the common signs of poor water circulation in a pool, the presence of algae growth and debris accumulation provides a clear indication of circulation issues. When water circulation is ineffective, certain areas of the pool may stagnate, leading to the development of algae—a result of inadequate water movement and insufficient disinfection throughout the entire body of water. Debris accumulation, such as leaves, dirt, and other particulates, also suggests poor circulation, as the skimmers and main drains may not be efficiently drawing water, thereby preventing debris from being removed effectively.

The other options indicate conditions that do not typically correlate with poor circulation. Clear water and balanced chemicals usually indicate good water management, while even water temperature and minimal maintenance point to effective circulation and filtration systems. Low water levels and high evaporation rates are concerns, but they do not specifically relate to circulation quality. Thus, the option highlighting algae growth and debris accumulation is the most reliable indicator of poor circulation.