perlite, pumice,
totototo@telus.net (Wed, 05 Jul 2006 09:05:15 PDT)
On 4 Jul 06, at 15:41, boutin wrote:
Even out here in my rural part of California it is difficult to buy
large bags of the coarse graded perlite. They seem to only have or
want to deliver the so called medium, which has lots of fines in it.
The "coarse" horticultural perlite I buy has gotten much finer the
last couple of years.
BTW, a warning for those contemplating other sources: don't use
perlite sold for insulating houses; it may contain fluorides, unlike
"horticultural" perlite.
--
Rodger Whitlock
Victoria, British Columbia, Canada
Maritime Zone 8, a cool Mediterranean climate
on beautiful Vancouver Island