On Sun, 19 Jun 2005 22:52:38 -0400, "*muffin*" wrote:

yes , running a foam 4 chamber pre-filter,,,, into a sand filter,, & then a
bio filter attached

I'm just "assuming" a pressurized sand filter, might be similar to a bead
filter in what it does to the KH. My suggestion is monitor the KH bi-weekly
for awhile and figure out a maintenance treatment and amount of baking soda
as needed. Very similar to pool care. ;o) You just don't want to be adding
baking soda if there is ammonia showing without treating/detoxing the
ammonia.

(Missed the salt info, glad you got it.) ~ jan

~Power to the Porg, Flow On!~