Hello. I am up and running on a new 90gl with a used Trigger Sump that I bought. As you can see in the picture, the overflow from the tank goes in the sump and there is about a 4-5 inch orange stand pipe that goes down into the filter sock (Currently removed in picture). My question is this: Does that orange standpipe need to be there or should the water gravity fall into the filter sock out of the black fitting? As currently constructed, it makes quite a bit of gurgling. I wasn't sure what the correct install should be as I bought this setup used.
Also, I will be installing a RedSea Skimmer in that same compartment this weekend, if that makes a difference..more of an fyi.
Also, I will be installing a RedSea Skimmer in that same compartment this weekend, if that makes a difference..more of an fyi.

