Eco Greenhouse: Basic Principles (aka, ZG: Basic Principles, Geo-Solar Principles)
The 10 basic principles necessary for the most efficient Eco Greenhouse.
Applicable to geothermal greenhouses, geothermal grow-rooms, and geo-solar greenhouses.
Diagrams and illustrations
50 years of development, coupled with the newest, tested technology since 2015.
See also: Eco Greenhouse: Construction and Assembly publication, Grow Rooms, Geo-Air Technology: A-Z
* Included FREE with Eco Research Library membership.
Instant digital download.