Just moved and now have well water. Tank water has been opaque, not actually cloudy if that makes sense. Just did a 50% water change this afternoon, and still not clear. Tested parameters a bit ago: ammonia 0 ppm, nitrates 160 ppm, nitrites 0 ppm, ph 8.2. No plants, I feed 2x a day. Its a 55 gallon with a medium fh, a medium jag, a small jd, a medium common pleco. No algae issues either. So I'm not sure what the causes are, except the possible effects of the high ph well water.