One of the most significant advantages of using  Kaldnes or similar filter media in a moving bed filter is its self-cleaning property. As the media moves within the filter, it continuously rubs against other media pieces. This abrasion helps to slough off excess biofilm, preventing the media from becoming clogged and maintaining optimal filtration efficiency.

Water lily flowers close at night to protect their delicate structures from predators or getting too damp from heavy morning dew