Thanks for the comments,
I realise i ahve a few hungry corals.
Its one of the down sides to working 8 days a week.
Plus i ran out of food, so had to order more in. Now theres a few ice creme pales full of home made cubes that were made with corals in mind. & fish.
I started feeding it 2 days ago, and noticed a few are starting to bulk up again. once they are better i will get some more shots. including a FTS.