Question

What would be the advantages and disadvantages of using tribasic sodium phosphate (aka trisodium phosphate) to soften water by removing calcium ions?
DrBob222
http://hpd.nlm.nih.gov/cgi-bin/household/brands?tbl=brands&id=3007033
GK
For the disadvantages check the link given to you by DrBob. The main advantage is that calcium ions in solution precipitate as calcium phosphate thus removed from the water.