It's been quite a while since I cycled a new tank. But as I recall, the ammonia showed first followed by nitrite shortly after, and nitrates stayed zero for quite a while. But finally when the nitrates started to show, and they showed high, the nitrites and ammonia then went to zero.
So if you have never seen nitrites or nitrates, I would say your tank still hasn't cycled.
It took me a few months to cycle that tank, but that was before I was using MB7, and initially only had dry rock, no live rock.
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