I'd run the skimmer. The "live rock" is going to have a bunch of dead stuff on it, so thats where you're getting the cycle. Like Kid said, it's totally normal. Let it run. I wouldn't even waste the test kits on it right now. It's doing the cycle just as it should do. Just kick back for a month and let it run it's course.
Start checking your ammonia and nitrites around the last week of September. If they are both at zero, then check your nitrates. Record your nitrate reading. If they are high (more than 10 IMO) then do a 50% water change and let it sit for another week.
After a week, check ammonia, nitrites and nitrates again. IF ammonia and nitrites are still at zero, then check the nitrates again. If they are under 10 then go get ONE coral or ONE fish.
Stock slowly. One new coral per week OR one new fish per month.
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