I ordered the 1# live rock add on And chaeto to help Cycle my 2g pico, and I’m very happy. I didn’t get any fan worms or critters, but on such a tiny piece that is to be expected. As they said, the coralline did turn orange right after unboxing and putting it into the tank, but a few days later I see nothing but purple and some spots of bright red. I was also pleasantly surprised with the cycle. I was expecting to have to wait a couple weeks for any die-off to process, but after a day or two of low ammonia and nitrates both readings went down to zero. Will definitely consider this rock again if I start a new tank.