The "problem" with anemones is that they are very particular about location. So even if it sits in one spot all week, as soon as you turn the powerhead back on, the environment changes, and it's likely to move again (usually into said powerhead). I've had them move even after moving the angle of a powerhead. And as the lights wear out, it will move. And as corals grow and the flow changes slightly, it will move. Basically it could decide to move every time there is a slight change. Best bet is to cover the pump intakes or move it into a species specific tank. Or give it to your friend and let him remove it from his powerheads
