- May 3, 2007
- 18,069
- Pool Size
- 20000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite (T-15)
Unfortunately, I don't think you can. Most controllers won't go that low. However, there are alternatives to using automatic freeze protection:
The Physics of Freezing and Freeze Protection
The Physics of Freezing and Freeze Protection