Yesterday morning when I walked up to the tank, I was very surprised when Ursula had crazy light bars on her sides. They were practically yellow! I tested everything, 0/0/10, hardness and pH stable at 9 and 7.6 respectively. I decided I’d give her a day and see what happens. The colour came and went periodically through the day, sometimes very rapidly. She ate as enthusiastically as usual and is behaving normally. This morning she’s got the bars still, but coming and going. These photos were taken this morning about 2 minutes apart each. Any advice? Should I be worried?



footnote- I keep waiting for her to destroy the plants but she keeps loving them!



footnote- I keep waiting for her to destroy the plants but she keeps loving them!