I do have to add that after pruning my anacharis i do see massive amounts of bubbles escaping from the cut stem. I don't see how this can be pearling. Could the pearling you see after a water change be the same bubbles i see escaping from a cut stem, either do to the change in pressure from the changing water level(like on a plane when your ears pop from expanding/contracting gasses) or from damaged tissue from excessive movement from the water change?


Just a thought.