I was learning how to open the new to us pool from the previous owner. I was going around and taking out the rubber plugs which are underwater. One of them got sucked into the wall as soon as I loosened it up! Must have been suction from the lines filling with water. Now the pump is running and the water didn't shoot the plug out. Any tips? I'm going to try a long reach mechanic's helper grabber tool thing to see if I can reach it. If that doesn't work- I have an air compressor- not sure what to use it on....