I've found it takes about 2 weeks for a skimmer to break in and start producing good skimmate. I think for that model skimmer the adjustment is the real pain. But from what I've read once you get it tuned then it's a decent skimmer. Try just adjusting it a tiny bit at a time and then leave it for a few hours.
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.