Hi everyone I recently got some help from the forum saying my angels may have angelfish disease do to there swimming behavior and the affected not eating well. There are 4 Peru altums and 6 red shoulders. I just did a 50% water change yesterday and dosed general cure by API. I’ve had one angel fish pass the day before and now have one staying at the water surface. My PH is 7.4, ammonia 0ppm, nitrates 5-6ppm, nitrite 0ppm, temp 78*. Water is slightly hard. If I could get some help to hopefully grow them to adults I would very much appreciate it.