My African tank has been set up for 6 months and my other tank has been set up for 1 year. I had changed from gravel to sand with my SA tank prolly ... January. My tank is cycled, I know about all that. I just started happening. My levels were great and I was able to enjoy my fish tanks with regular maintenance. Which is: water changes ever week, biweekly vacs.
So yes it just started happening.... All my other params are great.
I keep meaning to and then I forget to test me two water but, like I said it used to be fine... So I wouldn't think it's that. Would water from my tap change? I get city water.
My African tank is at its max, I understand that but I take care of it... So idk why all the sudden I'd get high nitrates besides the filter thing. I don't think I'm rinsing my filter enough.
My SA tank would be considered overstocked, if my fish were fully grown. It's a 45 gallon with 1 inch firemouth, 2 inch green terror, and 1 1/2 inch jack. Oh and a 1 inch marble sailfin pleco. I'm going to be upgrading obviously...
EDIT: forgot about pH. In my African tank my pH is 7.6 and high range is 8.8.
My SA tank my pH is 6.6 and high range 7.8
Also I usually don't replace my media, but I don't think I've been rinsing or cleaning them or the filter itself enough. So my question mainly was to get other people's opinions on how often they do.