"Steve (Dart)" wrote in message
...
OK, first of all BS will make PH go up, think about it, high PH is
alkaline
water not acidic.
I have no idea what you have done to your pond.
time to start over I would think

Not exactly. Baking soda is (IIRC) 8.2 ph, so it WILL drop the a ph from
9.0. It is a buffer, bringing the pond ph back towards 8.2, whether the ph
is 9.0 or 6.0. If you are further out - say below 6 or over 10, it will
have a significant effect, but closer to 8.2 it takes a lot to move the ph.

I've read varying amounts - a pound per 700 gallons, a pound a week, etc, so
I can't say what is correct. Your plants are happy, do your fish seem happy
too?