Sorry it took me so long to respond Jayne, but we were kind of in the
dark here in the Hampton Roads area of Virginia. For your tank set up I
would suggest a Ocean Sun 10,000K deep reef bulb by Zoo Med. They are
not 50/50 or actinic(sp?) bulbs but do a very good job on my two
low/moderate light tanks. They are a little pricy, but fit in your
stock lid without having to do any modifications. Hope this helps.

Vicki