Dying Saltwater Tank

[MrAndrew]

I just came back from my 4-day vacation and to my suprise when i came home, i found 1 fish dead, my plate coral looking dead, and my finger leathers black looking dead also.  Before i had left on my vacation i installed a automatic fish feeder set for 12 hours a day. When i came back i checked the automatic fish feeder to see if it was doing its job. It wasn't, and again i was suprised. i dont know how it didnt work.

Is it possible that all my corals are dead?

[Perfectblue]

Its difficult to say what happened, was everything else normal? Did you test the water parameters right away?  Not feeding the tank for that amount of time wouldn't result in the death of your coral or even fish. If I had to guess I would say the deaths were caused by a temperature increase.

A little more information about the setup, stocking, parameters, etc. would help determine the cause.