I have been in the hobby for two months or three now, pretty new. Everything was going fine with my water parameters until one day I saw that my nitrite and nitrates were a little too high so I took care of that. By the way, I have 6 small goldfish, 10 minnows, and 4 ember tetras in a 29 gal
tank. A week ago I did a 75% water change because all the levels were a little high, but now that I checked again, I have 0 ammonia, 2.0ppm nitrite, and 10ppm nitrate, what can be causing this? I reduced my feeding to once a day last week as well.