Hi I noticed a small white spot on my platty and also a part of his tail missing he was also acting very strange he was wobbleing side to side and hiding a lot, I removed him from my 180 litre and have put him on his own in another tank so the other fish don't Chase him or catch what he has! Since today his tail has got worse but the white spot seems to have got smaller, I was told to use aquarium salt to help him but since using it his tail is worse I was also told to try garlic which I done also, someone please help!