Nick Curley here from Johannesburg South Africa. I have been servicing pools since 1997 when I got sick of the rat race in the construction industry, never looked back. It is the best job as you work outdoors & shorts T-shirt at the pool side.
I agree with all the information I have seen on this site as I have been running my clients pools this way for years, excluding the Bleach and Borates.
This is the only site I have found in my research for my book on looking after pools for the South African public that has the same conclusions that I have experienced in the 15 years I have been in business.
The only problem is there are no decent test kits available here in South Africa, possible business for someone.