The only thing for current in my tank is my penguin 150 powerfilter, and my korolia 1 power head. The powerhead is about 5 inches away from the anemone and isnt directly pointed at it. And the filter doesnt hit the anemone that much either. Its not splitting because both of my anemones have been doing this off and on for a while now, and ive watched them do this and if it were current they would be like that pretty much all of the time, and wouldnt be able to un twist, wouldnt they? because my current never really changes. They seem to be able to twist and un-twist at will...i just dont know why.