I read back a couple of posts, since you started with live rock and dry rock combo. The live rock super started your tank cycle and will help tremendously. Dry rock tends to have a bacteria die off and can leech alot of stuff into your tank as bacteria starts to colonize on it. Dry rock is more prone to algae growth compared to live rock.. (from what I've seen and read) your tank may still have a mini cycle to get through and will probably develop algae at some point during the "ugly" phase which is roughly about the first 4 months or so.
You can certainly leave the lights on a normal cycle but you may have to deal with the self induced algae problem if it happens. Leaving the lights off or at a minimum will certainly help reduce the algae