It will take up to two weeks or so for a new skimmer to break in. You wont have any luck adjusting it now most likely.
You also have a new tank so there isnt much to skim yet.
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.