cuz if I was you'd been slapped by this point, something ain't rite with your water..... bio and air does NOT = good water quality, use a test kit !!!! Salt is not the way to go. Given your description of the Umbee's scales and tail fin is a clear indication that water quality is not up to par, find and fix w/e it is immediately or say your goodbyes quick.
yeah ima test my water at my lfs tommorow and i know where he got the infection he proly got it from a red terror i got for free that had a cut but it turned out to be a bacterial thing so the umbee proly got it but there is still time to heal him , but tmmorow ima post the water parameters

