Hey guys so my 6 inch arow has some fin rot and I noticed this 2 days ago and have been doing a 20 percent water change everyday on the 125 gallon.......I don't want to add salt bc of the Motoro ray...... Any advice ? And this is a grow out tank didn't want to put my 2-3 inch aro or my other babies in my 476 gallon pond from the start
