I got home today from work and noticed that one of my Red Zebra's wasnt looking to healthy, I did a water test straight away using API 5 in 1 Test strips.
as soon as i put the strips in the NO2 and NO3 just went pink on the strip. My test kit only measures 0-200ppm on NO3 and 0-10ppm on NO2.
So i immediately did about a 60-70% water change, put the usual chemicals back in the water after a water change.
During the night one of my Electric Blues died, i tested the water again this morning and once again the NO2 and NO3 are off the chart.
What could cause my NO2, NO3 levels to spike so radically? The tank has been running for about 4 months. The ammonia levels are still below 0.5ppm, PH is about 8.0, GH is about 120, and KH is 180, Water temp was about 27 degrees when i got home. The light stays on for about 10 hours.
I have a 170L tank running a 1400L/H Aqua One Nautalis Canister filter (which was cleaned about 10 days ago)
Any help would be great.
Cheers
Edited by THE D, 11 January 2012 - 06:24 AM.