I'm having a professional install my system with the hunter equipment recommended on the this site Pro-C, PGP, etc. So thanks for the reading. My well company told me weeks ago that my filter needed special consideration before installing the take off for the sprinkler system. This filter system is two years old and I believe introduces air in the water as part of the process. I know it filters for arsenic amung other things and looks like 1 thin and two overtsized scuba tanks. I hope that dumb ...