One other thing though, if my pH was low and I wanted to raise it slightly,
I would prob use baking soda regardless of KH wouldn't I?
What other avenues would I have if my KH was "high" relative to my pH?
R.

"battlelance" wrote in message
...
On Thu, 4 Mar 2004 15:37:21 -0000, "Richard Phillips"
wrote:

I see,
So you are saying that with a KH test kit, it's easier to gauge how much
baking soda to add to achieve a particular KH (and hence a particular
pH)?
Roughly how closely linked are KH and pH values? I know they are linked
to
eachother in chemistry terms, but does it usually hold that at a
particular
KH you tend to have a particular pH?

You should have pH, KH and GH test kits to determine the amount of
additives (baking soda, epsom salts, marine salt, etc.) you need for
your particular tap chemisty and tank size.

And they aren't linked 1:1. For example, my pH is 8.0 and my KH is
around 250. My tap water is 7.5 and my KH & GH are 10 ppm.

You'll want to read:

http://www.cichlid-forum.com/articles/buffer_recipe.php
http://www.cichlid-forum.com/articles/gh_kh_ph.php

And any other article that me be of relevance to you on that site.

Good luck.