Dry-stall vs Horticultural pumice ... was algae and moss in seedling pots

Fred Biasella arlen.jose@verizon.net
Wed, 01 Feb 2012 15:04:02 PST

Hi Ken,

I had this problem too but then I mixed some Physan 20 with water and it
cleared up the moss/algae problem.

Fred Biasella
Cambridge, MA

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