Hi everyone, new guy here with another question. Several weeks back I purchased a small zoa colony. It was on a 6" long piece of rock about 2" wide and they appeared to be the smaller type zoas about the 1/2" diameter at the most but mainly smaller. So everything seems to be going ok but this morning I am looking at the piece sitting atop some other rocks in the lower portion of my tank. There is a 2" by 1" piece of rock on the end corner and the whole corner keeps moving side to side intermittently. Not the zoas on top but the rock portion they are affixed to. I keep thinking the corner rock end is going to bust open now and some major ugly pest is going to jump out of it and get loose in the tank. Flashbacks to the the first alien movie I guess.
What exactly is going on here? The rock they are living on is not alive so are the zoas just forcing the rock to separate or something so they can expand their colony?
What exactly is going on here? The rock they are living on is not alive so are the zoas just forcing the rock to separate or something so they can expand their colony?