You live, you learn my saltwater friend! I had the same thing happen to me when I was beginning. Now, I cover all of my powerheads in all of my tanks. I use filter media (mine is about an inch or two thick and blue). I cut the filter media into a rectangle that is large enough to cover the powerhead intake from top to bottom. Next, slice a pocket into the top of the rectangle and slide the intake into the pocket...now, when a fish gets near the powerhead, they aren't sucked directly to it, they can escape.