Can't keep SPS alive

[Jason McK]

I have what I thought to be a very healthy tank.
I currently have
Corals
Plerogyra Bubble Coral (Green)
Trachyphyllia Red Brain
Caulastrea Green Candy Cane
Euphyllia Greaan frogspawn
Euphyllia Green Hammer
Dendronephthya Carnation coral
Capnella Kenya Coral
Sinularia Devils hand
Studeriotes christmas tree coral
Sacrophyton toad stool
Lobophytum Cabbage coral
assorted mushrooms
Green star poyps

Inverts
BTA
2 Maxima Clams
1 cleaner shrimp
1 peppermint shrimp
1 coral banded shrimp
various hermit crabs
Various snails
1 very elusive mantis shrimp
Fish
1 Bicoloured Blenny
3 Blue/Green Chromis
2 perc Clowns
1 Whitecheek Surgeonfish
1 lined Blenny

Wholey cow I should copy this some were I'd never really done inventory before.
That's it the whole tank