Thanks a lot Mike. It feels amazing! I'm very happy. I spent a lot of time and money on the plumbing and sump, so to have no issue is a great feeling.
I was just as nervous filling up the tank. I thought the water was gonna start overflowing onto the floor lol.
I'm going to keep playing with the gate valve. Every 30 min I go into the office and just listen. I did lower the water level a smidge. There are no more water bubbles but I still hear a faint gurgle. One could argue that it's silent but not to me lol, I'm gonna keep tweaking it. Where should the skimmer water level be? Seems like 8" is the lowest. Also what biological filtration should I go with? The bio brick (plate) from brightwell is about $40, out of stock though.