I putting my first anemone in later today, a bubble tip. I have a 125 gallon with 2 Tunze Turbelle Stream 6105 powerbeads. One on each end of the tank. I keep reading about them getting into powerbeads and to "guard" the powerbeads. How do I do that? How common is it for it to move to a powerhead? None of my rock work touches the walls of the tank. Could I add 2 anemones at the same time?