Certified Pool Operator Practice Test 2025 - Free Pool Operator Practice Questions and Study Guide

Vacuuming the pool bottom is best performed after foreign matter has settled. This approach ensures that the debris, such as leaves, dirt, and other contaminants, can be effectively removed from the pool floor. When the debris settles, it becomes easier to vacuum as it is no longer floating in the water, making the process more efficient and thorough. Immediately trying to vacuum while debris is still floating may not be effective, as it can simply stir up the contaminants, leading to cloudy water and requiring additional filtration efforts.

By choosing to vacuum after the foreign matter has settled, one can enhance water clarity and maintain better overall pool hygiene. This practice also aligns with routine maintenance schedules that suggest addressing settled debris to ensure the cleanliness and safety of the pool environment.