Activated Charcoal Filter Can I Convert A Water Softener To A Whole House Charcoal Filter?

Can I convert a water softener to a whole house charcoal filter? - activated charcoal filter

I have a water softener to an old house. My house, the new needs of the whole house activated carbon filters. Can the media use the same fabric softener and activated carbon filters for the removal of the entire house, so comfortable? If so, what measures are needed?