Hello again, I posted here yesterday worried about a white patch on my clownfish’s mouth which looked like it might have been an injury from lip locking. However today the white spots have spread and are now a lot more obvious! He is still swimming and eating as normal and isn't showing any signs of being ill apart from the spots! Is this ich? And if so how do I treat? I cannot afford to set up a hospital tank and have corals in my main one. Heeelppp pleaseeee!