Add this Switchable ballast option to your 400W HPS and 1000W HPS Sunlight System 1, Super Sun and SunGro systems . The option will allow you to burn both HPS and MH bulbs in your system by simply changing bulbs and flipping the switch. Note
This option is ONLY available for the lighting systems mentioned above and can be installed ONLY at time of purchase.
Super Sun and Maximizer System 10 Hoods can only accept the smaller BT-37 MH 1000W Bulbs so be sure to order this type only if you have either of these reflectors.
