Is my acro ok?

[Aquattro]

Originally Posted by jason604

Would I have to cut past the dead part into living tissue?

Yes, just above the dead area.

[jason604]

There is no aiptasa or algae around my acro so what else that I can do to see what the problem is before I start cutting off my colony's base?

[Aquattro]

Originally Posted by jason604

There is no aiptasa or algae around my acro so what else that I can do to see what the problem is before I start cutting off my colony's base?

At this point it doesn't matter. It won't grow back. Cut the dead off, re-utty it into place and let it encrust the putty. It's not a lot, and it's dead skeleton.