Hello everyone, When I went today to feed to my 1 year old Betta fish, I noticed he has an extremely large swelling of one his eyes. I'm pretty sure it's Popeye, but I don't understand how it could have just appeared overnight and so large as well? He is very lethargic and has basically stayed in the same spot since I first discovered the protrusion - he is on top of his Betta leaf and in the floating grass so thankfully he doesn't have to struggle much to get to the surface. He isn't venturing to the bottom nor is he swimming around at all like he usually does. He is also refusing to eat as you would expect. I feel so bad for him, the swelling looks painful and I'm not able to get to Pet Smart until tomorrow morning. I have already got a list of a few medications to pick up for him, such as Tetracycline, Maracyn 1 & 2, Amoxicillin, etc., depending on what they have available. I have also already given him an Epsom salt bath and have performed a 30% water change. What else can I do until I can get to Pet Smart in the morning? What is the best medication/treatment for Popeye? Is it actually Popeye or something else? I have Mystery Snails (I think?) in the tank as well, baby/adolescent ones, about 20-30 of them (plus a whole bunch of hidden egg hatches I presume), which I'm planning to give away soon. I have heard of a disease called Eye Flakes that is caused by snails though I haven't been able to find a lot of information on it. Could that be the actual cause of his protruding eye? Note: My water parameters are Ammonia - 0.25ppm Nitrite 0ppm Nitrate 20ppm PH 7.0 (this is the first time that my PH levels were anything but 7.5 if that is at all relevant). I have also recently started to add aquarium salt into his water if that also means anything. * I have also added some pictures I just took of Gogo to make it easier for you guys to make a diagnosis; the second picture is of him in the Epsom salt bath bowl. And also the snails that I have - there is a close up in the last 2 pictures, plus they can be seen in some of the other ones - if someone could please identify them for me. Thanks in advance.