High pressure sodium EXTREME HPS-bulbs are designed specifically for indoor enhanced plant growth and flowering. High Pressure Sodium has a light spectrum shifted towards the red, and is used during the flowering stages of growth. Designed specifically for electronic ballasts. High lumen output and a wide color spectrum for maximum yield. Standard E39 Base. 1 year warranty.

- 145,000 Lumens!
- Designed for indoor use
- Light spectrum towards the red
- Used for flowering stages of growth
- Compatible with electronic ballasts only
- High lumen output
- Standard e39 base