RE: NANFA-L-- Hardness & pH
Wed, 31 Aug 2005 10:19:26 -0500

All the recent discussion regarding hardness and pH has been interesting.

I recently returned from spending a few days along the north shore of Lake
Superior with about 50 pounds of beach pebbles. My intention is to
tumble/polish these stones and replace my aquarium gravel with same.

The native fish I keep, being Kansans, are used to limestone (mostly)
gravel substrates and highly buffered water conditions. The proposed
replacement substrate would consist entirely of igneous stones (basalts,
diabase, gabbro, rhyolite and granite).

Can anyone tell me if this is a likely recipe for disaster? What water
parameters would need to be monitored? Would I be OK maintaining a thin
layer of limestone below a single layer of igneous stones?

Anything else I might consider?


Steve Haslouer
Topeka, KS

Kansas River basin
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