Does anyone know the safe maximum ppm tds units for CPs and plants in general? San Diego tap water reads 450ppm tds, which I believe is outrageously high, and they're probably going to add flouride to our water supply by next year. Will reverse osmosis remove flouride? I heard the Miami area reads +/- 220ppm tds where my R.O. unit is produced and they stated that even that reading is very high. I'm curious about the tds readings in other parts of the country.
What does deionization remove?
What does deionization remove?