What can excessive debris in a pool lead to if not cleaned regularly?

Excessive debris in a swimming pool can significantly impact water quality and ecosystem balance. When organic matter like leaves, dirt, and other debris accumulate in the pool, they can decompose, creating an environment conducive to algae growth. Algae thrive in conditions where nutrients are abundant, and stagnant water can occur when debris isn't cleared away.

As the debris breaks down, it can release phosphorus and nitrogen—nutrients that algae utilize for growth. Consequently, if the debris is not consistently cleaned from the pool, it can lead to cloudy water and a green appearance, making it uninviting for swimmers. Effective pool maintenance, including regular cleaning, helps not only in maintaining clear water but also in preventing conditions that lead to algae and other problems.

The other options misrepresent the effects of debris accumulation. For example, debris will not improve the swimming experience, lower chemical demand, or enhance water clarity. In fact, the opposite is true; regular maintenance is essential for a safe and pleasant swimming environment.