Joe,
You and I have exactly the same tank...aren't 30" long lights hard to find?? I thought so. Anyway, the light fixture I have actually has 2 moonlights, one on each side of the brace, so that hasn't been a problem for me. I think as long as there is some light getting in, you should be fine.
This is so nice to find a thread with successful tanks using "only" pc lighting. Post more pics if you can. I'm off to see if I can get some decent pics with the actinics and later on the moonlights. Back later...IF I can get some pics...
Mmmmm, no pics this evening...batteries need recharging on the camera, sorry. I'll try to remember to post pics tomorrow evening.
Lisa :happyfish