Howdy, I have a 4 bulb T5HO fixture powered by a single electronic ballast. I was hoping to split the wiring into two separate circuits so I could run 2 blue bulbs off of a separate timer than my white bulbs, before I realized it was a single ballast. The label on the ballast suggests that there is a way to operate two lamps independently of the other two (by switching one of the neutrals with the grey/red wire - see pic of diagram on ballast). I'm trying to figure out how I could set up two timers with this configuration. Seems like I could use a regular plug in timer for the overall, I'm just not sure how to switch the second circuit with a timer since it's not line power, and just a neutral wire at that point. Any ideas or suggestions? Short of buying a different fixture...