Do feed your flower pot dirctly with brine shrimp? I did this a few times and my cleaner would go into the flower pot and pick the shrimp out of the polyps, the polyps would quickly retract so i quit feeding brine directly. Now i just feed it phytoplankton directly. As you know, flower pots are touchy at best, it will probably be annoyed with pesky cleaner shrimp always in its polyps. You my want to concider returning the shrimp if it continues such behavior. HTH