Allen do you have Acros under yours, if so what setting are you at for them? I bought the Photon 24 for my 30L softies tank ithe end of Oct and I'm running them at 45b/40w. I will up that a little this week, they had been under a 4b T-5 ho fixture. I also would like to know how your Favias and Acans like them? Thanks, Holley