Yeah, the acans vary throughout the tank. They are the happiest corals in the tank, aside from the favias that seem to be taking over. I think my only problem is the zoas/palys stretching. I think I might also upgrade to a couple of nano koralias though, it seems like it could use more flow, maybe if the zoas and palys got whipped around by the flow a bit, that might keep them shorter too?
I couldnt find anything with a decent gooseneck that would hold up the weight of the lamp and cost less than $50, so I bought an $9 desk lamp from IKEA and stuck the bulb in there. The corals seem to be responding pretty well to the stronger light. Ive only had it running for a little over a week, so time will tell. I'll try to take pics soon, Ive been getting requests for them via PM.