What is an indicator that a filter is ripening?

A filter is considered to be ripening when it is becoming more efficient in removing particles from the water. As a filter operates, the buildup of particulates and biological material on the filter media improves its capacity to capture and retain further particles. This phenomenon is characterized by an increase in the filter's performance due to the formation of a biological layer, which enhances the removal rates of contaminants.

During the ripening stage, while the turbidity might start to break through or an increase in algae growth could occur, these are not reliable indicators of the positive aspect of ripening. Instead, they may suggest that the filter is nearing the end of its effective operating cycle or is in need of maintenance. The true measure of a ripening filter's effectiveness is its increased efficiency in particle removal, reflecting a balanced growth of beneficial microorganisms that aid in filtration.