Curious on how often the skimmer cup fills up. I have the same tank but a different skimmer - I am always messing with dialing the skimmer in, once it fills to about half way the production seems to greatly slow down. I try to empty mine once a week, but can probably go two weeks without it overflowing.
Love the Chevron
I usually empty it twice a week now since I don't want to smell it. I'm in the room a lot where the tank is so I keep it clean. You really shouldn't have to mess with it once you have it dialed in, as long as you have a ATO.