a good thickness greenhouse mat for all day

[Coba]

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?

 

[Dkgrower]

You want something that is more clear.. thickness idk i just got the reg type and that last forever and i got strong winds and hard winter.

If you can talk with the pepol you are going to buy the film from tell em you are growing vegetables and want the one with as much transmission as possibol.. unless you are in some very sunny location, what i am saying find a local supply and talk with them they have the expertise in your region so best to go with that..