Be careful with the installation of the grommet. Don't let this happen! With Super Lube on the grommet and my fingers......it got away from me. I powered up my laptop computer and positioned it in the trunk of the car. Connected an endoscope to the USB port and fed the camera into the tank. The camera needs good lighting. So I had to insert a small 100 watt drop-light into the tank also. Used a coat hanger to snag the grommet. With the tank already mounted in the car, it took a lot of time to get the the coat hanger bent with the proper angle in order to make the snag. Plus, I did not want to disturb the position of the filter sock. What an ordeal....but I got it out safely!