if thats the case why is his other ray ok it dont make sense surely the meds would of killed both rays?
i think there must of been a problem with the ray before the meds were added
not 100% true each rays are affected diffrent i find that females seam to be affected more with things like shipping and getting them settled into a new tank
one ray may go belly up the other may have stayed carmer but their is still the chance of inturnal damage
when i 1st started with rays and wasnt sure what meds to use and their was no internet to ask suprplyers on meds if they were ray safe i added some thing to a motoro leo tank the motoro went belly up but the leo was fine i put the tank on a 24hr overflow systerm to tank all the tank water and they were both fine
each ray is diffrent