- Have you tested your water?
- No
- If I did not test my water...
- ...I recognize that I will likely be asked to do a test, and that water tests are critical for solving freshwater health problems.
- Do you do water changes?
- Yes
- What percentage of water do you change?
- 21-30%
- How frequently do you change your water?
- Every week
- If I do not change my water...
- ...I recognize that I will likely be recommended to do a water change, and water changes are critical for preventing future freshwater health problems.
I have a 10 inch albino Oscar who I’ve had since he was about 2 inches, about 6 months ago. He is looks super healthy. Recently I noticed he developed a black squiggly line on his left side. I am worried that he is getting sick or worms. Any ideas what it could be??