I have tested my Nitrite level with two different test kit:
Aquarium Pharmaceuticals is showing my Nitrite level as 0 ppm.
Tetra is showing it to be less than 0.3 mg but greater than <0.3 mg. Both kits are reading the same on everything else. The salinity is 1.023, PH is 8.4, Ammonia is 0 and...