Looking really good Dan, I love the progression shots. But not happy to hear it is a slow grower. I got a piece in what I will call a "blind trade" on my side. After I cut the piece I was trading, I found out the piece I was receiving was 1/4".... I assumed it was a 1/4" in height, but no it is 1/4" flat piece cut from the base. So I'm going to say I have about 5-6 corallites of the blue matrix. Now that I see how long it takes before it really starts growing, I estimate I will have a piece about the size of your original frag in about 50-years. I've had the frag for 1-month and I don't think it has grown at all yet.
Again, great pics, I love the color of the blue.