What species of anemone?
What size tank?
What lights?
How long did you have the anemone?
How long has your tank been set up?
What are your current water parameters --- with numbers please.
What color was the anemone?
All my water has been fine except the last two weeks i had really high nitrates.. Im sure that was the cause. But its going down now. I am at 40ppm now.. Everything else in my tank is doing fine. I have a 125gallon with Metal halide/PC antics 250watt..