1. Had it for about 1.5-2 years
2. It has one other of the same species. I know that is too small but just haven’t been able to go get some more.
3. 20 gal
4. 10ppm nitrate
0ppm nitrite
180+ kh
7.6 ph
0ppm chlorine
0ppm ammonia
tank has been only topped off in the last two weeks
two neons and two black skirt tetras (again haven’t been to the store yet). They are not looking ill at the moment but others have lost some over the last few months to some form of illness
the food has been increased a little bit. They get two sinking pellets and one pinch of food per day.
If I am making mistakes remember that I have little experience in treating disease.