I just finally finished setting up my 65g and turned the pump on for the first time. I noticed the flow seemed really loud so I looked in the corner-flow section where the noise was coming from. It turns out that there’s a hole on the underside of the elbow that my loc line is connected to, and it’s spitting water against the plastic and back into the overflow instead of out my loc line into the tank. The pvc pipes in the corner flow section came with the tank and each pipe assembly came already put together. Is that hole supposed to be there? If not, what can I do about it?