Running some GAC
, if possible, would be a good precautionary measure. I don't know exactly what's in purple up, but it would be a good idea to check so you know what your adding to your tank. If the anemone does not look better by tomorrow I would start making some SW
's and discontinue the purple up additions. FWIW I've never read anything compelling enough to make me think purple works much faster than just having good Ca
, and magnesium levels.