You sure they are VHO T5 I know there are T5HO but not VHO. Plus the true actinic T5 stink. From what I have read and seen. If it was me I would run 10k MH then ATI Blue+ bulbs they have a lot of PAR to btw. Here is that thread I talked about above hope it helps http://www.reefcentral.com/forums/sh...hreadid=724967 I think some where in there it talks about the blue+ and aquablues as well. Like I said I think.