pwsusi
01-13-2007, 01:22 PM
Hi,
I'm currently using R/O water and blending filtered well water to bring the conductivity up to 150 micro siemens. My problem is that the KH of the water is too low and I'm afraid of pH crashes. Here are my water parameters...
Direct out of the tap
pH – 7.8-.80
Conductivity – 300 micro siemens
KH – 5 degrees
GH – 10 degrees
Pure R/O
pH – 6.2-6.4
Conductivity – 14 micro siemens
KH – 0
GH – 0
Blended water that i'm storing for water changes...
pH – 7
Conductivity – 140-150 micro siemens
KH – 0 to 1 degree
GH – 3 to 4 degrees
Ideally I'd like to have the GH and KH around 2 degrees. But as you can see my GH is twice as high as my KH. So when i soften the water with R/O my GH is right where I want it to be but there is no buffering capacity. If I add more tap water i'm concerned my pH is going to shoot up. I have the same concern about adding baking soda to increase the KH. I should also mention that I've been adding just a little muriatic acid to the blended water to lower the pH from 7 to about 6.6
Any thoughts on how I can bring up my KH while keeping my pH down?
Thanks,
Paul
I'm currently using R/O water and blending filtered well water to bring the conductivity up to 150 micro siemens. My problem is that the KH of the water is too low and I'm afraid of pH crashes. Here are my water parameters...
Direct out of the tap
pH – 7.8-.80
Conductivity – 300 micro siemens
KH – 5 degrees
GH – 10 degrees
Pure R/O
pH – 6.2-6.4
Conductivity – 14 micro siemens
KH – 0
GH – 0
Blended water that i'm storing for water changes...
pH – 7
Conductivity – 140-150 micro siemens
KH – 0 to 1 degree
GH – 3 to 4 degrees
Ideally I'd like to have the GH and KH around 2 degrees. But as you can see my GH is twice as high as my KH. So when i soften the water with R/O my GH is right where I want it to be but there is no buffering capacity. If I add more tap water i'm concerned my pH is going to shoot up. I have the same concern about adding baking soda to increase the KH. I should also mention that I've been adding just a little muriatic acid to the blended water to lower the pH from 7 to about 6.6
Any thoughts on how I can bring up my KH while keeping my pH down?
Thanks,
Paul