daveroconn
There is some effect of the dissolving of scale. Softened water that is void of calcium carbonate and magnesium will naturally pull these elements into it. As far as a total clean up of the plumbing I think is a bit farfetched. Remember if your copper plumbing had no oxidation in it to protect it from the best solvent on earth-water, copper couldn’t posibly last as long as it does. As far as scale build up affecting the flow of water inside copper I don’t think you will have to ever worry about that in your lifetime. The biggest problems with pipe oxidation come from iron pipe. Iron will expand to 70% of its mass when oxidized. Seawater being totally void of calcium carbonate will not reveal any skeleton remains of fish etc. On the other hand fresh water with abundant calcium will. As far as your using 20 to 30 micron filters I would have to see the dirty filters that you are replacing. If they are caking then you should keep up your regiment of replacing them. If no caking after a month you could try a 100 micron but be aware the sediment will be in contact with the resin inside you softener. Maybe try checking them at a 2-month interval and act accordingly.
