never said it was a cal def. if it can be saved save it no matter if yer gonna miss it or not. not every problem is a life or deth situation little spots like that could just be a slight nute problem
not if you wont help us help you, again i ask how old, what ya feeding whats the ph, what medium is it growing in whats your day temp whats your room like\ mylar, panda, burn causing foil, are you misting or foliar feeding????? these are things that need to be known to diagnose a problem, and ya never did tell us if it was gwtting worse or staying the same. a plant can take a lot of abuse and it does not look like a disease so it won't spread from plant to plant so what are ya gonna loose buy not cutting it down. come on help me help you