The first may be some type of Merulina or possibly a Hydrophora (try a google search for both and compare)
Second appears to be some type of leather...kind of hard to tell.
Third looks like a lobophyton or trachyphyllia...again try a google search for something to compare it too.
I like to look of your reef...it has seriously matured and filled out since you first posted pics of it. Good job and best of luck. nmreef@cox.net
An ID on the first one is a Rugosa or Elephant Skin (Pachyseris). It is an sps. don't know much about them except they need a good bit of light and a lot of current.
i am from austin as well. What LFS do you go to?
never heard of austin aquarium. Where is that? i go to Aquatek.
By the way, worked in DHS right out of college and I bought a house right behind Dell off of Gattis School road. What division are you in?