1. Two kuhli loaches are swimming oddly (sideways), breathing very fast, laying out in the open, one has red gills and the other has a red spot on its side
2. pH 7.6-8, ammonia, nitrite, and nitrate are all 0ppm. I know the pH is high but they have been adjusted to it for well over a year
3. 30
gal planted tank, its been over 2 months its been set up
4. I have one sponge filter 30gph and another sponge filter 80gph
5. All juvenile fish, all <2 inches. 4 platys, 5 corys, 2 rams. None of them ever bother/attack the loaches
6. I did a water change 3 days ago to remove some meds (about 7 gallons), and another one last night after I noticed the weird behavior (5 gallons) I vacuumed the sand about a week ago
7. I’ve had these fish since september, originally there were 3 but one died last week when I was treating the tank for ich
8. I haven’t added anything new to the tank before this behavior, but after I noticed the red mark I added anti fungal meds
9. I feed them a mix between tropical flakes, algae wafers, and freeze dried bloodworms
This could be reactions to stress from one dying or it could be from the salts, that’s all I can think of at least.