@MaxDamage984 gets first dips but I have a tub of some old 'live' rocks that has been sitting in this tub for 7+ months now. These were the rocks from my first saltwater tank and when I upgraded I ordered all new rock (was going to run both tanks). I did take some of my old rock to add with the new rock. The rest I left outside for a week to dry out and then placed them in the tub. The tub has been in my laundry room every since.