I've had a tailspot blenny in by EVO 13.5 for about 9 months now and noticed over the last few days his left eye getting more and more swollen. I suspect it's popeye according to some old posts I found. None of them seem to conclude if there is anything that can really be done about it. I don't have any sort of quarantine tank unfortunately, tbh I don't think I could catch him if my life depended on it either way. I tripled checked my Nitrates as the internet says that is a big cause but they are sitting about 3ppm right now. He also routinely battles with a bristleworm over a hole he won't give up on so part of me wonders if got injured at some point. Anyone dealt with this before? It's sort of horrific and I feel bad for him but he is still eating as of last night at least. Any insight is appreciated. Thank you in advance.