I came home this afternoon from work to find one of my angels swimming sideways then tilting nose up randomly. I tested my water and my ammonia tested at I think .50ppm (according to the api test kit chart) so I did two 50% water changes over a course of 4 hours and I’m waiting to test again tonight.. All my other fish (one female angel, some black neon tetra, Bn pleco, and 8 corydora) are all well and not showing signs of stress, lethargy, regular appetite and coloring. My female angel is also swimming and begging for food like normal. I made a brace for him in quarantine to keep him upright while I have a sponge filter running on low inside his quarantine bucket. I have seachem kanaplex, metroplex, sulfaplex, paragaurd, and stress guard on hand for medicine but I’m hesitating to treat as reading online has told me meds can make it worse? Also his coloring is normal, no red steaks, pale patches, milky spots or fuzz, no swollen belly or raised scales so I’m not sure constipation is the problem.