I remember the first time I actually made my plants pearl. It was a long road getting there but when I got there was I ever happy! Since then, though, I don't care if my plants pearl for me non-stop, as long as they are not dying or being overrun by algae. One hard lesson I've learned is that if it's not broken, don't fix it. Too much tinkering with a good thing can make it go bad. I'm not going to start messing with my tank just so I can see pearling, if everything else is going good. On the other hand, when my algae starts pearling, that means I need to start tinkering.