That bolt and nut is to keep extra pressure off of the acrylic when full of water, when it is full, it’s slightly bows, and it puts stress on the corners in the seams. also it keeps it perfectly square and helps with better suction for the protein skimmer
I'm hoping you can help me. I took the skimmer, etc apart to clean it. Now I can't figure how the heck the little grey ring with the screw goes back in the skimmer. Now I have no bubbles in tge ski mer and the directions included are awful! Thanks in advance and ❤ your videos
It is shown in this video, ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-lzdGwv7Q32o.html, starting at about 2:00 time stamp. The throat of the pump fits through the black plate and the gray ring fits over the pump throat to hold it in place.