Hey everyone, so I bought a large tank off someone and he threw in the coral he had. Its in pretty rough shape. Its in a quarantine tank. Ive got zoas, mushrooms, and an unknown favia covered in gha. I removed as much as I could with a toothbrush and does the tank with Reef Flux for a little over a week and not much has changed. The mushrooms are doing fine, the zoas are making a comeback but the favia is looking dull and the tissue is receding from where the gha was. I did a peroxide dip 4 days ago and that too has not changed much. Any tricks or pointers? Thanks!