Ph6 ammonia 0 nitrates 0 nitrites 10ish. Water is soft. Some fish have white spots. I'm assuming Ick. Treating for it. But some who have only 1-2 spots, usually on fins are doing this vertical swimming head up. But some other fish are absolutely covered in spots but are swimming fine. 2 mollies and a guppy. They only occasionally swimming like that but will also occasionally barrel roll almost down (with head up) and hit the gravel with their backs. But you tap the tank and the swim normally. This is third fish to do so. Other two didn't make it. Any ideas about the vertical swim? I know they have Ick but didn't think that was a symptom of ick. It's a 36 gallon.