It has been a long time since I made this original post and wanted to let everyone here who helped me out how everything turned out. I ended up using a Stenner 3gpd peristaltic pump and pump module to inject the hydrogen peroxide instead of the Chemilizer pump. The reason for this decision was that there would be no need to dilute the h202 with distilled or RO water using the Stenner pump versus the Chemilizer. This made it much easier on my dad and his arthritic hands, no carrying many gallon jugs of water and having to mix it up with the peroxide helped tip the scale. The system has been working for 6 months now and the water is great! No more rusty sinks, toilets, or showers. And it tastes wonderful for the first time in a long, long time. I still want to try a Chemilizer pump and will do so on another house sometime in the near future. Will let you know how well that turns out. Thanks again for all of your help, it really came in handy getting this system designed and working well. John