I have a greensand iron filter with an Autotrol 255 valve. The greensand filter sits between a well pressure tank and a water softener. It's being used to treat well water with an iron level of 3 PPM, and problems with iron bacteria. I had it installed 3 years ago, after running into problems with my water softener clogging every year or so.
My main problem is the greensand filter clogs every 3-4 months, causing the potassium permanganate solution to backup out of the holding tank. In order to resolve, I have to remove the venturi valve and filter screen from the Autotrol 255 assembly - and either replace or clean (with Iron Out) these 2 parts. The problem is that the inside of the valve is almost completely coated with orange sediment & sand, which I have a very hard time removing completely from the inside.
After 3 years of dealing with a mess of purple solution backup & frequent valve replacement & service calls (occasionally I can clean myself, but other times I have to have the installer out) I'm at my wit's end with this filter. The installer is now recommending a "Big Blue" cartridge sediment filter be installed between my pressure tank and the greensand filter. I'm hesitant to take his advice since he didn't recommend the sediment filter in the first place. I'm wondering if such a filter will solve my problem, or if I need to look at other alternatives (get rid of greensand altogether and go back to just a softener, or replace greensand with another iron filter)?
Any advice is greatly appreciated; I'm a first-time poster and have searched this forum and many others, but haven't found a post that exactly matches my situation.