Hey I tried cycling my new fluval evo 13.5 with a clown and it seems to have fin rot when I came home from work it’s ventral fin was rotted and came off I checked everything and the water in the tank seems to be fine the only thing I couldn’t check was the ammonia my api test kit wouldn’t work I did everything it told me to do I contacted cultivatedreef because I did just get it today maybe the ammonia levels spiked and caused it I don’t know I’m very sad I even named him hopefully it will recover I don’t know if that fin will grow back or not