On Wed, 06 Feb 2019 07:31:57 +0000, Chris Hogg wrote:

On Wed, 06 Feb 2019 03:15:47 +0000, Mark Rand
wrote:
Gypsum has a reasonable effect as a de-flocculent in clay here, but
^^^^^^^^^^^^^

organic matter seems to be far more efficacious.

Mark Rand

ITYM flocculant


Brain was tired :-)

Mark Rand
--
RTFM