The AquaticLife 20" T5 HO 2 Lamp Freshwater Fixture comes with one 18 watt 6000K T5 HO lamp and one 18 watt 650nm T5 HO Lamp.

Features:

• Two or three fixtures can be linked to together to create a 4 lamp or 6 lamp 24" T5 fixture. Linking hardware is included. (See pictures below to see how the fixtures can be linked)
• Electronic Ballast built into Fixture makes installation easy
• Individual reflectors around each lamp to maximize light output
• Included Tank Frame Mounts hold Fixture securely on top of the aquarium
• Anodized matte finish provides visual appeal and years of life
• Includes aquarium frame mounts (4 legs, as shown in picture)
• Does not have a fan--the housing design helps to dissipate heat
• Dimensions without frame mounts: 20" X 4.75" X 2.63"

• To keep the light cycle consistent, we highly recommend using a timer