I'm thinking you might be able to drain water down below concrete
level, turn waterfall off, let it dry thoroughly, then coat the
concrete with a sealer of some sort (don't let it drip into the
pond!). Multiple coats. Let dry. Let dry some more.

Refill.

HTH
Mike


On Thu, 20 May 2004 21:59:35 -0700, "simplesoul"
wrote:

Hello Jay,
You asked
What is the alkalinity/pH of your fill water?
It is 7.5

I guess it's useless to treat the pond with muriatic acid, hunh? I suppose
if I kept the water level below where my concrete starts that might help?
Then again my two-tiered water fall is made of concrete too.... rats
*%@#$!!!

You've been very helpful and I do thank you!!!



_________________________________________________ ___________________________
_______
That said, its the concrete. I really wouldn't fret about it too much.
You will be prone to suspended algae and perhaps... perhaps... less
successful breeding....

Best treatment, a TWO part epoxy pool paint.... very, very costly and
time consuming.

jay
Thu May 20, 2004




I did empty the pond 1/2 way recently and then refilled it. However, I
did
not check the PH level until after doing so and so did not ad the
muriatic
acid until after adding the fresh water.
Cheers!





"T" wrote in message
ink.net...

"Go Fig" wrote in message
...
In article , simplesoul
wrote:

Hello folks!
I just wanted to see if anyone had a situation like mine and
therefore
some
advice to give. I have a 2 year old, 1500 gallon pond with 6
medium
sized
koi. I just began testing the PH level recently and found it very
high
(over
9). I was told to carefully and gradually add Muriatic Acid to
bring
the
PH
level down. I did and for a very short period of time, brought the
PH
level
down to about 7. However, it doesn't stay 7 very long and spikes
right
back
up to nearly 9.

Any guesses on why the PH level doesn't level off?

Is this a concrete pond ?

jay
Thu May 20, 2004



Thanks in advance for anything you can offer.
Steve



Do you just top off the water in the pond? Or do you regularly change
it
by
removing water and replacing it??

Tim






Mike Patterson
Please remove the spamtrap to email me.
"I always wanted to be somebody. I should have been more specific..."