So alittle back story, I had a 220 gallon tank that I ended up breaking down and selling. Bought a new deep blue 60 cube and set that up. It's been running for 16 months now. Well I'm getting the itch for a bigger tank again. So here's my dilemma, I have about 60-70 pounds of live rock that have gone from my 220-60 been in a well kept system for around 4 years. It's great rock and is covered in coraline. I would want to add more rock and new live sand to the upgraded tank with the rock that I already have because I don't really want to start a new tank over again. Also more new saltwater. My issue is im worried about my fish, corals and mostly my sps. Do you think a new cycle would start? I think it will be good as long as all new saltwater par. match up. Most of the new rock would most likely be branch. What and how would you accomplish this task? Any concerns?
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