Save my corals

[canadianbudz604]

I was gone away for awhile and the tank never got taken care of except over feeding and top ups. I'm using ro/di which tests 0, but I think the tank is too far gone now. I did a 60% water change, but maybe it's time to shut it down. I have a really nice hammer in there, but the skeleton is covered in red turf algae. The soft corals I'll just cut off at the base and hope they live. How do I save the hammer and frogspawn?