Cosmofish
- #1
Nitrite stuck at 2ppm for weeks
HI I have a 55gal community tank (1 pleco, 2 catfish, 3 guppies, 5 mollies, 2 angelfish, 4 swordfish, 4 neons, 2 platy and 1 female beta) with fluval c4 out of tank filter, 2 air stones . The tank has been set up for 3 months, I've gradualy increased the fish community in the tank to what is there now. I had a ammonia spike at the beginning but its been over 8 weeks that I haven't had an ammonia spike ( always 0 or .25ppm). Now its been 4 weeks my nitrite has been at 2 ppm to 5ppm.
I've done daily water changes 25 to 33%, sometimes just water change, no gavel vacuum and other time partial gavel vacuum and other time full vaccum, but the nitrite is always in that range. The nitrate has never spiked, I'm assuming all the water changes is keeping that in check. Using prime or aqua+ as a water conditionner.
I've added prime to reduce the nitrite effect but the next day the nitrite is back.
I've added biological enhancements like stability or cycle even double the recommended dose daily ... nothing changed.
In the filter I'm using biomax chips in the chemical section with active carbon, my biological section there is c nodes.
I've read everything on nitrogen cycle, water changes , high fish stock and still no clue why the nitrite is stuck at 2ppm and up.
There is no fish death, no disease and the water is Cristal clean.
Is there something I'm doing wrong ? Can't figure out why the nitrite stay high!!!

HI I have a 55gal community tank (1 pleco, 2 catfish, 3 guppies, 5 mollies, 2 angelfish, 4 swordfish, 4 neons, 2 platy and 1 female beta) with fluval c4 out of tank filter, 2 air stones . The tank has been set up for 3 months, I've gradualy increased the fish community in the tank to what is there now. I had a ammonia spike at the beginning but its been over 8 weeks that I haven't had an ammonia spike ( always 0 or .25ppm). Now its been 4 weeks my nitrite has been at 2 ppm to 5ppm.
I've done daily water changes 25 to 33%, sometimes just water change, no gavel vacuum and other time partial gavel vacuum and other time full vaccum, but the nitrite is always in that range. The nitrate has never spiked, I'm assuming all the water changes is keeping that in check. Using prime or aqua+ as a water conditionner.
I've added prime to reduce the nitrite effect but the next day the nitrite is back.
I've added biological enhancements like stability or cycle even double the recommended dose daily ... nothing changed.
In the filter I'm using biomax chips in the chemical section with active carbon, my biological section there is c nodes.
I've read everything on nitrogen cycle, water changes , high fish stock and still no clue why the nitrite is stuck at 2ppm and up.
There is no fish death, no disease and the water is Cristal clean.
Is there something I'm doing wrong ? Can't figure out why the nitrite stay high!!!
