I have an australian blasto frag and I keep mine at the bottom of my tank. I havent' seen much growth out of it though. It did repair some dying heads that actually fell off which I put in my pico, also on the sandbed.
Here's a link for the blasto
Hope that helps a bit.
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.