I have very high pH well water. And I would advise fixing it once you have
had the water age for awhile. I have read that high pH does hurt koi and it
adversely effects any meds you might put into the pond. But for me, I
adjust it because of the plants. Just try to grow some varieties of water
plants in KH 430.

--
Wendy* in N. California,

"People will forget what you said; people will forget what you did, but
people will never forget how you made them feel." -- Bonnie Jean Wasmund


"Kevin" wrote in message
m...
Wow! Establishing a new 5,000 gallon pond, doing some analysis on the
water and my electronic pH meter shows the tap water in my town at
9.4. Shocked and disbelieving I checked the water company's website
and they claim a pH of 9. Isn't this pretty high? If I remember my
high school chemistry isn't water supposed to be around 7 to 7.5?
Axelrod's book suggests an ideal range for Koi of between 6.5 and 8.0.
How the heck am I going to achieve that?

My new pond has an automatic fill/overflow device on it. This will be
supplying a very small amount of makeup water at a pH of 9.0 it seems.