Few days ago, my male ray bite a new female I realeased into the pond. she had regular bite marks. Two days ago, she had some white batch on her disk. the white stuff keep on spreading and seems to eating away the flesh at the disk. you can see she is loosing her skin. today, i found out another ray is having the same problem so i don't think it is bite marks anymore. Please help me determine what it is how how to treat it. I am trying to treat the entire pond. the pond foot print is 6'lx4'w, estimate water volume is 180 G.
Please let me know what medicine is best for it, water temperature...
My water is 0 on ammonia and light blue on nitrate. I just did a 20% water change for the pond and added extra salt. Please help



Please let me know what medicine is best for it, water temperature...
My water is 0 on ammonia and light blue on nitrate. I just did a 20% water change for the pond and added extra salt. Please help


