I'm setting up my 29g again with my 3b2w BoostLED's the only problem is it's not as blue as I'd like. Therefore, I'm considering buying two 12.5" royal blue stunners or maybe a single 24" stunner. Big question is, just how bright are these stunners and how much coverage do they provide? The goal is that coral "pop" while the Par 30's are on and an actinic only ability. I'm not sure if a single 24" across the center of the tank or two 12.5 (centered: one in front and one in back) would be best. I'd really like info from anyone that has experience with these units. If anyone is famiiar with the Mu 135, that's the actinic blue I'm going for.