So i have some ich going on in my display tank. I had plans to switch over my 120 fresh to the new reef display. So my plan now is to move just my smallish corals over to the 120 and let them grow out for the 70+ day period and just leave the fish and rest of the scape in my current 75. If i leave the scape in there for 70+ days with a copper treatment can i then swap it over to the 120 after the ich is eradicated? Or am i out 50+lbs of rock? I’m already planning on a mew substrate so i don’t care about the sand but rock is super expensive as you all know