I would use non-live sand and perhaps seed with a couple cups of your existing sand. You might also consider doing an mb-7 or prodibio biodigest regimen in your existing tank for a couple weeks before you swap the rocks over. Try to get the temp and salinity spot on between the two tanks to avoid shocking any hitchhikers like pods, bristle worms, etc.. You should have very minimal if any cycle, but you might so give it at least a little time before livestock.
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