Hi everyone I’m not sure what to do. I noticed yesterday my gourami was quite puffy but other than that he was okay. I have a 60L tank with 8 neon tetras, 1 pleco (sucking catfish), 1 corydora( the other one died just a few days after I bought it from petbarn, and the dwarf gourami that is sick. I checked the water yesterday the ph was a bit high at 8.0, I don’t know why I always have issues with the ph going up too much, nitrite was 0, ammonia 0, nitrate was 5.0 and I did about a 30% water change. I’ll add a picture of the gourami. Is it safe to use aquarium salt? Also I got rid of heaps of snails because I have too many and thought maybe that was the issue( probably not).