Reef Roids?

[Ruth]

Has anyone noticed that their anemone's are not liking this stuff? My huge green carpet anemone that is usually like 12-15" across shrunk up to about 4 inches after I had been feeding this for about 5 days. I wasn't sure if it might be that I am in the process of switching salt. I did my normal water change (15%) last Sunday and have not fed any 'roids all week and it is back to it's nasty glory.
I can't say that it is the 'roids but something made it act out of character. I have had this anem for over a year and that is the first time it has ever done that. It stayed shrivelled up for about 3 or 4 days.
I know this could be from a number of reasons but the timing was odd. I don't have any other anemones in this tank and have not fed this to my other tank with anemones, and won't, as I am running zeo on that tank.