Looked over at my tank once, and thought I had a dead poly 
But once I tapped the overflow, he took right off. I've seen him do this on several occasions, and other than this, he exhibits no other odd behavior. He seems to like just like chilling out up there sometimes, floating, being held by the suction of the overlow. He will come down on his own, and doesn't stay up for extended periods of time. Is this something I should be worried about or prevent?

But once I tapped the overflow, he took right off. I've seen him do this on several occasions, and other than this, he exhibits no other odd behavior. He seems to like just like chilling out up there sometimes, floating, being held by the suction of the overlow. He will come down on his own, and doesn't stay up for extended periods of time. Is this something I should be worried about or prevent?
