Was going to say. The spike you got would probably have come from critters and insects that got into the rock during transportation, or the water itself. But the amount of bacteria they produced would not be enough to support any fish you put in there at this point. You leave it the way it is and it will never cycle. You really need to add live rock and wait, probably do what a lot of people do to speed it up a bit, get a shrimp from the grocery store and put it in your tank and let it decompose, and wait, much like most people here I am not a fan of using live fish to cycle a tank no matter how hardy they might be. Even with all live rock setup a seasoned reefer will wait for a few months before adding any livestock into their tanks. But just like I said if you only have marco rocks in your setup it will never cycle.
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