So i’ve had this goby for about 4 months and probably a month ago, he began to develop a white scrape. I had assumed it was just a scrape because i saw it shortly after I had been moving my rocks around to catch a six line. A month later and it seems to be healing but still a reddish sore. Assuming it’s a bacterial infection but I don’t have a QT right now. Any ideas what I could do?