I started the cycle via deli shrimp 1-25-19 and had ammonia and nitrite reading by the next day. I added BioSpira and DFS live bacteria. I took the shrimp out when ammonia got to .5. The nitrite climbed to almost 2.0 and has been stuck at .5 - 1 for almost 3 weeks. Can anyone shed any light on why it’s not going down? I’ve never had nitrite do this when cycling.