Im pressed for time in a major kinda way as I work nights and should be in bed playing Sleeping Beauty, so bare with me if this is brief as I am already starting to do "Touch and Go's"

20 lns of Gulf Rock is not nearly enough for a tank your size. This type of rock is extremely dense. If this is the kinda rock you are going to use for the rock in your tank exclusively, you need to shoot for at least 55-60 lbs if you can comfortably get that much in there. Despite it being about as dense as depleted uranium, I have to admit I really like a lot of the life that often comes on this kind of rock. Tonga Branch is just about as dense. If you use Fiji depending on the quality of it density wise you will need another 20 pounds or there abouts to top off your tank. If you use something thats very porous and light such as Pukani or Marshall Islands rock then about 15 more should do the trick. This lighter rock cost more but it takes much less of it in your tank to do its job.

So are you going to remove the sand and go Bare Bottom? Or are you going to replace it with something you find more appealing. I use a lot of Pavestone Pulverized Limestone these days since its a whopping 6 Bones a 50 lbs bag at Lowes or Home Depot. It falls right in between Oolitic grade sand and Carribs SeaFlor grade of sand in color and texture. Until I stumbbled into that stuff I used a lot of Tahitian Moon and Oolitic sand.

Nice Zoo's. I especially like the 2nd and 3rd pics. These are one of my favorite corals. They are pretty easy, dont demand a lot other than good lighting and moderate flow and come in a mind boggling array of colors, so there is sure to be a color that tickles your fancy.

Dont know what exactly you go going in those two photos that you asked about. I would need a much better pic with a Macro lense to have much of a chance at getting you a reasonably correct ID. IDing corals with just a pic is often just about impossible to do when it comes to most Hard corals, especially SPS corals. Looking at the pic there are a lot of things one could suggest. Sorry I cant tell you more. It does look as though you have a Liver Sponge or two on that one piece of rock in the picture.

Love the Chalice. Thats a very nice looking frag you scammed on. Some examples of Chalice can come in some pretty mind blowing color Morphs. I havent kept one of these yet but now that the prices for them are more reasonable and the demand has come down a bit I think there might be a future in one beinging in one of my tanks.

Ill get back with you on the rest of the stuff later tonight hopefully.