Question

How is the filter bed cleaned

Answer 1

Filtration is a process that involves passing water through layers of sand, gravel, and charcoal to remove small particles.

Step-by-step explanation:

Filtration is a process used to clean the filter bed. It involves passing the water through layers of sand, gravel, and charcoal to remove small particles. The water is then disinfected and stored.

Answer 2

The filter bed is cleaned by occasional backwashing ;-; im sorry if this isn't a great answer but I tried