GH advice ?

[HDCochran]

Here are some suggestions: Seal all joints, seams, etc. especially in roof. Heat with most locally economic fuel. Cover exhaust fan. Glaze with twin-(or multi-)wall polycarbonate. Do not glaze north wall; make it a solid wall and insulate (2" foam). Use bubble wrap or pool cover under roof panels. If you use RO for orchids, use reject water for under-bench misting/cooling. Use adequate circulation fan(s).

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