Hey ya'll, so I saw these start to grow on one of the zoa frag pieces, they grow in line and have been reproducing rapidly. I have seen them breath/exhale or filter. I'm not sure if they are some form of Tunicate. The second highlighted picture there appears to be some sort of membrane growing also. Any help or advise would be great, should I try to dip it or scrape them off, worried that they are overcrowding the zoas!