Just the other day i noticed that my aro must had struck my return pipe, bending it back a lil ways and cracking the bulkhead in one place. You can see in the picture that the pipe is bent back and sticking out of the water a little bit. I dont want to move it yet because i think it might make it worse. In the second picture you can see the top of the bulkhead is bent and at an angle, the black line would be how it originally was. The last picture shows the crack in the top of the bulkhead. No leaking so far at all. The bulkhead is old, i never changed it because it was heavily glued and plugged on purchase. Im trying to think of a way to fix this problem without draining my tank. Because i have a 2'++ aro and large catfish with no other place to store. I have an extra tank but i dont think i can set it up in my living room, parents would kill me. I was thinking about adding a high pressure check valve before the bulkhead, and hope that whenever it breaks (if it does) i could just put something on top of it inside the tank to alter the flow of the returning water. If it doesn't leak from the bottom. Might just use aquarium silicon the bottom of the bulkhead hoping that it doesn't break apart so it will last me a little longer. Any ideas?