Hi Brianslater
if you like to dose household bleach, you'd better use bleaching powder (containing ~ 60 % available Cl2) that is sold in Thailand. i visited 3 waterworks in combodia, they ordered from Thailand. your problem is, it's sold in 40 or 50 Kg package. too much for your demand.
i heard...
Hi
If you can use bone char to remove fluoride effectively, let's say 90 % removal, remaining concentration is still higher than its standard for drinking water. It can cause flourosis, anyway.
I found this information from "Water Treatment Principles and Design" by James M...
