Hello, I have been using 2ml daily of %95.5 ethanol in a 450 gallon set up. When introducing this dosage into the return pump in the sump, within ten minutes my elegance coral shriveled up and took a week to return to normalcy my fox coral also was possibly disturbed from this too as he receded when dosing as well. Is this a common problem? Water parameters are stable and haven't been an issue.