| 400w 400 watt HPS magnetic ballast High quality! | $55.00 |
| Eye Hortilux 400 watt HPS Bulb 400w Lamp - Hydroponics | $67.95 |
| Lumatek 400w Hortilux HPS Digital Ballast Grow Light | $269.95 |
| 400W 400 watt HPS HYDROPONICS GROW LIGHT BULB Mogul | $12.50 |
| 400W MH & HPS Switchable Grow Lights Ballast S51 120V | $159.95 |
| 400W MH & HPS Switchable Grow Lights Ballast S51 240V | $159.95 |
| Case of 4 Hortilux Super HPS 400 W Bulbs 400w Bulb FREE | $249.95 |
| 400W 400 watt HPS ET18 LU400 High Pressure Sodium Bulb | $9.99 |
| 400W HPS & MH DUAL ARC HYDROPONICS GROW LIGHTS BULB | $20.50 |
| 90W LED GROW LIGHT UFO = 400W HPS HIGH POWER | $155.00 |
| Eye Hortilux 360 watt HPS Conversion Bulb 400w MH lamp | $94.95 |
| Future-Brite 400w Eiko HPS Digital Ballast Grow Light | $269.95 |
| Lumatek 400w Digital Electronic Ballast MH / HPS 120v | $169.95 |
| Lumatek 400w Eiko Bulb HPS Digital Ballast Grow Light | $229.95 |
| 400W 400 watt HPS HYDROPONICS GROW LIGHT BULB Mogul | $12.50 |
| Eiko 400 watt HPS Bulb 400w Lamp - Hydroponics | $23.95 |
| Future-Brite 400w Hortilux HPS Bulb Digital Grow Light | $309.95 |
| 1000w hps and 400w hps grow lights with extras | $311.00 |
| 400W 400 watt HPS HYDROPONICS GROW LIGHT BULB Mogul | $12.50 |
| BEST CLOSET HYDROPONIC SYSTEM ON EBAY 400W HPS/MH | $499.99 |
| 400 watt HPS GROW LIGHT 400w System Hydroponic sun lamp | $105.00 |
| 400w 400 Watt EYE Hortilux Super HPS Bulb Grow Lamp | $76.90 |
| 400 Watt HPS C400S51/ALTO 400W CERAMALUX HPS BuLbs | $9.00 |
| GE 400W Son-T Tube, Son High Pressure Sodium, HPS, GES | $1.49 |