I have been growing a frag of it for about 2 yrs. now, it is probably about 3" in diameter(I too let it kind of go by the wayside for a little while, I dug it out of some rocks, and now a couple of months later, it is back to normal). Good luck with yours, mine does good anywhere in my tank(high or low) under 250wt halides and lots of flow all through the tank.
Matt