I started the hobby over 3 months ago with the 13.5 Fluval. One of my LFS gave me a tiny piece of live rock and then the rest in dry rock. Told me that the tiny piece of live rock will eventually turn my dry rock to live rock. Then I started having a bad algae outbreak and another LFS recommended to start over. So I upgraded to a 24 gallon with all new live rock and everything is doing very well. My question is, I just bought a Yellow Watchman a couple days ago and my Royal Gramma has been a bully because it’s established it’s area in the larger live rock fixture. Can I take that tiny piece of live rock from my old tank and put it in my new tank? In hopes that the goby will use it. I will say, the small piece has been sitting dormant in my old tank for about 2 months submerged. No flow or anything.