These high-quality T5 HO lamps are excellent for all indoor gardening applications. Use the color of your choice for the growth phase of your plants. Mix and match for a full spectrum effect. For use with T5 HO fixtures.
The Ultra Sun® T5 54 Watt HO Lamp 4 ft Blue 6500K is far and away, one of our most popular items. People can't seem to get enough of it.