| Ion-exchange Softener for good skin?
Around my region, there is a very strong opinion among hobbyists that soft water is very good for koi. It promote good growth and improve the quality of the skin - more lustre, thicker mucus to prevent parasites and better overall health.
So a big number of us installed ion-exchange softener (as I undestand it, to get rid of Ca and Mg, which are replaced by Na), and feel satisfied that now the water is 'soft'!
In one of the thread in this forum last year, if I remember correctly, several people pointed out that ion-exchange softener is actually useless, and water should be softened only by lowering TDS. I tend to agree with this, but not very sure.
Would board members of this forum give clarification. The more the better, to support this opinion, as among my friends, I am really going against the tide. Thank you all. |