Kathy, as Theron stated, Baking Soda is strange inasmuch as it will both
raise and lower pH to the 8.2-8.4 range. It will also raise your KH to a
more respectable number, which will add the buffering you need to protect
against pH crashes in heavy rains.

Are you by any chance on well water?

By the way, 9 is "getting" high, but is still a safe and respectable level.
Don't lose any sleep over it: your fish and plants will do just fine.

Lee

"Jeff & Kathy Brown" wrote in message
...
What is the fastest, safest way to lower the pH. My pH is registering at
9.01 with KH of 89.5. Go figure. Please advise...thanks.
Kathy