Ultra Sun High Pressure Sodium (HPS) lamps have a rating of 2000°K, which works great throughout the entire growing cycle, but is especially good for the fruiting and flowing stages of plants.

Robustly constructed with a ceramic insulation plate, a beefy starter and a stainless steel armature, this lamp delivers 50,000 lumens and can be hung horizontal or vertical in open or closed fixtures and is designed for use with modern, efficient E-ballasts.

Pro-tip: Add a Yieldmaster 2 Reflector and an Xtrasun Dial-a-Watt E-Ballast and you’ll be growing in no time.

High Pressure Sodium lamps have a strong red spectrum, which promotes fruiting and flower and helps increase production. The Ultra Sun, high output, full spectrum lamps are ideal for plant growth, espically for growing fruits, vegetables, flowers and herbs. They are engineered specifically for horticultural applications. Ultra Sun lamps feature robust construction for superior reliability.