Aqualite™ reduces heavy metals etc. by ion exchange. The filter bed is saturated when no more ion exchanging takes place. However, regenerating the filter media with 10-12 % salt solution (NaCl - regeneration solution) can restore the Ion exchange capacity.
This might be necessary after 1 week or after 1-2 months depending on quality of the raw water source, content of heavy metals etc.
To regenerate, drain the filter housings of water and replace it with salt solution, leave it overnight and use an external clean water source for backwashing
(see picture image)