Answer:
Filter-feeding organisms can be used for reducing the amount of pathogens in the water, and therefore the chances of disease in farming facilities.
Advantages and disadvantages of active filters
These filters are more responsible than passive filters.
No resonance issue.
It can eliminate any harmonics.
Used for voltage regulation.
Used for reactive power compensation.
It provides reliable operation.
It can be designed to provide some passband gain.
No loading problem.
The chief drawbacks to filter-feeding are: 1) food supply is thinly distributed, requiring much swimming effort to secure sufficient nourishment and, 2) food supply is subject to wide fluctuations in relative abundance, especially in temperate zones.