I have installed several irrigation systems with residential wells as the water source. I have always installed a Rid-O-Rust injection system on all of these irrrigation systems to prevent iron stains on the concrete driveways and sidewalks. My only complaint is that the injection solution is so expensive. Have any of you ever used an inline iron filter. If so, what did it cost, what is the maintenance required, are you satisfied, is the homeowner satisfied? Please let me know your input on this topic. If you have had any luck with a cheaper solution to this iron problem, please let me know what it is. Thank you.