Nitrate is not go down after water change.

[Andreass]

Hi guys i need some help here.

I have 10 tanks where i get some fish in now and then but the last month my nitrate is raising to 50-100 (with salifert). I did take my fish out last week and change 50% of my water with new sea water that did have 0 nitrate. After det water change i tested my tanks 2 days later and the nitrate is back at 50-100 but i dont have any fish, sand, rocks or anything.... So i dont understand what happening here. Anyone have had the same experions?

I did test my nitrate in my Main tank and that did have 0 so my test set works. So is there somthing in my tanks that get my test set to go wild?

Im using skimmer in all tanks as well.

I tried no3xpo4 3 days and nothing happens with my results.....

 

[Clownfishy]

Are you saying they're is absolutely nothing in your tanks? NOPOX will take a week or two before seeing results

 

[Lasse]

Have you measure your NO2? A NO2 around 1 ppm can make the NO3 test to read 100 ppm with the most measurements kits

Sincerely Lasse

 

[Andreass]

Are you saying they're is absolutely nothing in your tanks? NOPOX will take a week or two before seeing results

No there is nothing right now. The is sirculation but nothing else

 

[Andreass]

Have you measure your NO2? A NO2 around 1 ppm can make the NO3 test to read 100 ppm with the most measurements kits

Sincerely Lasse

No i have not but thanks i will try that