Littlebuck,
It's the one you posted a pic of for me awhile back. The one off the 75 you were going to buy. It is just one. The bulb is less than 3 mthd old. Used very little, because I broke the tank down. A great set -up.
By the way I left a post for you, I really liked the pics of your 30 gallon and I'm starting a 30 gallon reef, I have the tank, live rock, sand, and it's cycling. I am wondering what kind of filtration you used, what lighting you went with, and what protein skimmer.
If you have any of this stuff, I'll trade for the 400 watt. Plenty of light for your 72!
Thankyou
Gordon