One of my bronze cory cats has gotten stuck to the intake filter twice. The first time I managed to find him in time to turn off the filter and allow him to escape. I then got a pair of panty hose and cut a bit of the fabric off to wrap around the intake to slow it down a bit. I then put a taller plastic plant all around the intake to discourage any curious mouths. I went to feed my angels today to see the exact same cory stuck to the filter again and the plants somehow moved enough to get in there! I was again able to save him in time, he's currently swimming around on the bottom but I'm a bit concerned as what to do beyond what I've done. None of my other cory's or fish have an issue with the filter, they seem to know to stay away from it. Any ideas?