[Embowe]

I just picked up a new t5 fixture in a trade with a fellow reefer and have a question. The light is actually for hydroponics, but does have 4 reflectors...the thing is...you plug it in and its on...no switches...Is there a way I can wire the ballast to have 2 switches...so I can turn on 2 lights at a time...I can take out 2 lights and 2 still work but I dont know if this puts any undo stress on the ballast or the remaining bulbs...does anyone know if it can be done safely