nice Sean. But I think These filters may only be good for a small flow, like you get in an RO unit, with 1/4 inch line, perhaps not good for city pressure and volumes. Perhaps if you put 4 in line? but I think the Prime doser will be more cost effective. I don't know what these filters cost, but plain ones would be around 10$ a filter, and changing them, every month perhaps would be 2x10x12 = 240$ a year. Prime for my set up (80 gal a day) is around 75$ a year. Brent
