You probably already know this, but I'll put it here for any newbies who may be reading: Remember that the good bacteria responsible for your cycle live on surfaces. If you are changing out the gravel and decorations, make really sure that you keep the same filter and filter media that you had in the established tank. You may still experience a mini-cycle doing that, so I would keep a close eye on the water parameters after you do the switch, just to be safe.
joy to the fishes in the deep blue sea
55, 30, 30, 20, 10, and 10-gal. freshwater tropical tanks