Mark: At this point I can't speak to the issues of slate and Salt Water Chlorine Generator, or your scaling issues. I am sure that the answers are on this website, or someone here will assist you. This site can easily become an addictive reading problem.
About the Stenner install: I will give details when I post on the other section after I get it working. I am guessing my costs including pump, carboy, and misc. items will be under $300. If you are interested in learning more from other members experience, there is a lot of information here: http://www.troublefreepool.com/i-ve-defected-to-the-dark-side-new-peristaltic-pump-t29652.html
Enjoy
About the Stenner install: I will give details when I post on the other section after I get it working. I am guessing my costs including pump, carboy, and misc. items will be under $300. If you are interested in learning more from other members experience, there is a lot of information here: http://www.troublefreepool.com/i-ve-defected-to-the-dark-side-new-peristaltic-pump-t29652.html
Enjoy