| Topic | Replies | Topic Starter | Last Post | Forum Name | |
|---|---|---|---|---|---|
| How wide a hole to still benefit from geothermal radiation? | 5 | kevin nachman |
kevin nachman |
greenhouses | |
| Passive Solar "Temp Greenhouse" for humid south (zone 7) | 3 | kevin nachman |
Lindsey Schiller |
greenhouses | |