A common cause of cloudy water is a filter that is turned off too often or clogged with debris. Run the filter for at least 24–48 hours straight to trap tiny particles. Check and backwash the filter ...

When we reviewed the Beatbot AquaSense Pro ($2,199) last summer, we praised its cleaning prowess, long battery life, and ease of use, but lamented its hefty price and lack of underwater control. The ...