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How should I cycle the tank? I'm using cured live rock from a friends tank and I read somewhere that if you use all established rock ammonia may not spike at all. Is that right?
If you have enough rock, and it wasn't out of water for very long, it's possible, but I would add some ammonia, and then test the water to see how long it takes for your bacteria to process it. If it has trouble processing the ammonia, you will need to cycle the tank still.