what's a good thickness greenhouse mat for all day long growth ... ?
this thing is 20mil. http://www.rhinoshelters.com/greenhouses/35-greenhouse-shed-12ft.html
is that too many mils? for all winter growth? for Ganja?
this thing is 20mil. http://www.rhinoshelters.com/greenhouses/35-greenhouse-shed-12ft.html
is that too many mils? for all winter growth? for Ganja?
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