I made a filter for a pond based of an idea of a website I found using a big tub. I just finished it and hooked it on to the pump in the pond and the tub started expanding!! Bulging out because of how much water is flowing through. I used rocks to keep the top secure. Would this pump be okay to use or do I need to use something different. I took some pics of it, Im not sure if the pics shows it and if you can see the bulging from the two long size let me know what you think thanks..
