Here are two frags that have been growing for about 4 months. One is a humilis, the other a millepora (on the right). The puddling effect of the corals is normal, but soon it will touch and then the warfare begins.
Alveopora from above.
Yes, this would be impossible in a Nano tank, but I did get some nice shots in my 29g of my clam. This beauty didn't survive the transfer to my 280g reef.