Originally Posted by moog24
I'm upgrading to 180 from 55. My main concern is the nitrogen cycle. All I'm adding to the new tank is live sand. The live rock will come straight from old tank. Will that be enough to skip the nitrogen cycle since the rock is from an established tank?
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as sniper said, shouldn't be a problem.
you will most likely see a blip of elevated levels, but it may be very quick. When I switched from 30 to a 50 basically the same as you are doing, moving everything over, my ammonia and nitrite went up, but came back down within 12 hours.
as long as you have the same bio-load, shouldn't be a problem.
biggest obstacle is gonna be waiting for a couple weeks before you can add more stuff!