increasing kH naturally ?

[freshfish]

anyone can please advise , how can i increase my water kH naturally ?

and is it possible to increase the kH without increasing the PH & GH ?

thanks

[chooz]

If you do an internet check, you will see that they are all related or inter-connected events.

I think you can increase KH without increasing pH and GH:
1. use sodium bicarbonate (baking soda) to increase KH only. pH will increase as well.
2. then increase CO2 injection to bring down the pH.

Actually the aim of increasing KH without increasing pH is so that you can accomodate more CO2 in a planted tank.

Sorry, don't know of any natural way of doing that.