"Joan" wrote in message
...
For buffering have you tried something more natural like oystershell
chicken
grit or small limestone rocks? I found neither one raises the PH much but
does buffer the water and keeps the PH from dropping. Both keep the water
above 7.

What is oystershell chicken grit?

It's fed to hens to help keep eggshells strong. It's oystershells and what
looks like clam shells ground into small chips. They slowly dissolve in
moving water.

Limestone rocks is a good idea. I imagine it will take some time to
equilibrate, but once it does, it should stay pretty solid. I'd be
really happy if I could manage to keep the carbonate hardness up
without the pH going so high.

The limestone rocks wont raise the PH like those store bought products can.
--

RM....
Frugal ponding since 1995.
rec.ponder since late 1996.
Zone 6. Middle TN USA
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