corner-flo

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...

I just purchased this tank and setup, I believe it to be a marineland 90 gallon corner-flo. There should be a front panel on the overflow, it was removed for some reason by the previous owner. Does this panel serve a legitimate use? Has anyone had any luck on finding a replacement; I have...