| PFO 400 Watt Dual Metal Halide Ballast | $152.50 |
| 400 watt Metal Halide grow light bulb cat# mp400/BU/MOG | $12.19 |
| NEW Sylvania 400 watt Metal Halide Metalarc Grow Light! | $9.99 |
| 400 W Watt 10000K Metal Halide Aquarium Bulb Lamp Reef | $2.99 |
| 400 W Watt 10000K Metal Halide Aquarium Bulb Lamp Reef | $2.99 |
| 400 W Watt 10000K Metal Halide Aquarium Bulb Lamp Reef | $3.24 |
| 400 W Watt 10000K Metal Halide Aquarium Bulb Lamp Reef | $2.99 |
| Wired 400 Watt Metal Halide Ballast Used | $40.00 |
| 400 WATT COOPER METAL HALIDE LIGHTS with HOOK & BULB | $35.00 |
| HPS & Metal Halide 400 watt HPS Grow Light w 400w MH | $164.89 |
| 400 WATT METAL HALIDE BALLAST | $36.55 |
| 6 New GE 18708 Metal Halide 400 Watt Lamp Bulbs FS4325 | $31.13 |
| 400 WATT METAL HALIDE REEF AQUARIUM BULB 10000K -- NEW | $10.49 |
| NEW SYLVANIA 400 WATT METAL HALIDE BALLAST KIT | $31.50 |
| METAL HALIDE BULB PHILLIPS 400 WATT | $10.99 |
| NEW Sylvania 400 watt Metal Halide Metalarc Grow Light! | $9.99 |