I have no idea why but I have always had good luck with acans, I do target feed it now and then when I remember to, but I have gone some months without feeding it over the years.
I need to get another picture of it, its grown a lot more since that picture...
It dose not seem to mind placement, I have had it on the bottom, up top, on the bottom side, just dose not care. this is the only acan I have had so far, and I think it must be the easiest going acan ever..