First off the actinic lights has to replaced. Change them to 6400K or 6700K. LOL
Yea, I don't think lighting is a problem at all.
And yes, I purchased it submerged.
I actually went to my lfs today, and they told me to just dose the tank Flourish Excel once a week, Flouris Iron once a week, and Flourish water conditioner once a week. They too have a 40 gallon breeder with HC and some other more demanding plants, and they have great growth with the oxygen bubbles and all. I suppose my CO2 is probably the main problem? I'm starting to dose my tank the same as the LFS from today, so hopefully that helps...