Agreeing with all Experts, ...

Agreeing with all Experts, wish to add a few guidance points, further to Ahmed Aakash.

ACF is not a Filtering mechanism, but a treatment one . As the water flow is maintained through the pores of AC particles, the property in AC is utilised to adsorb contaminant gases, vapours Etc.

In this process there is evrry likelihood of the AC Membranes getting clogged and resticting the flow bit by bit. This increases the contact time of the water flow with AC paricles.

This process is carried on, till a time when the flow gets very restricted.

Before ths condition is reached due maintainsnce practices need to be inititiated.

At best have the ACFs in twin basis, one in use and the other in maintainance/ standby function.

Both back flush and for- blow throughs with air and jet of water is useful for doing insitu practices to clean up ACFs.

After a certain time / flows in cubics, it is just and fair to renew the ACFs.

Well wishes.