So today before leaving for work I was just checking on everybody in my tank when I noticed what looked like two rips in the top fin of my angelfish. I've seen and treated fin rot before and this doesn't look similar it just looks like a little rip by I've learned it's better to be to cautious as opposed to not cautious enough. I was wondering if someone could tell me what the deal is! 0ammonia 0 nitrite 10-20 Nitrates, temp 80-82,ph is about 8.0-8.2. Anything else you guys need just let me know!!