Follow this link for more info:Propagating Anemone - While anecdotal, it may still be a valid observation that if you want your anemone to split or reproduce, frequent water changes along with target feeding the anemone every 3 to 4 days seems to induce the anemone to split (clone). This makes sense to me since for any animal to have the energy to reproduce, it must have the protein available. I also believe that the better water quality and the abundant food cues the anemone that it is in a very suitable environment capable of supporting more anemone like itself, a kind of trigger if you will.