No cure/cycle...?
So the 100 ppm Nitrates came from...?
Let us know about your retest.
Above 20 ppm is known to start causing problems with marine critters.
Good question - I was hoping to hear some theories! Possibly the test kit is bad? Or I have a problem If stuff looked unhealthy and/or dead, I'd be more worried - but everything *looks* fine, and has done for weeks.
Thanks for the help and advice - much appreciated.