Double-Ended HPS Grow Lamp

Double-ended (DE) bulbs and fixtures are the next-generation evolution of HPS (high-pressure sodium) lamps. If you are gardening under lights intensively in your home, especially if you're using grow tents, DE HPS lamps can be a good plant lighting choice. DE HPS lamps were originally designed to be compatible with traditional DE MH fixtures. A DE HPS lamp connects to a fixture on both ends, similar to fluorescent tubes.

Double-ended (DE) HPS lamps can also have a longer life span than single-ended (SE) lamps. Manufacturers claim that DE lamps produce 10 percent more PAR than SE HPS lamps, and that they also provide more UV and IR light.

Gardening Under Lights Book