We'll approaching week 2 of the start of my tank. My lfs gave me a few frozen fish that I left in the tank for 5 days while I was away. Now I have a flurry of copepods, which I think is good. But my waster test still showed 0 ammonia, 0 nitrite, and 0 nitrate. Is that normal? And yes I'm trying to take a pic through a magnifying glass with my iPhone not too successfully as you can see.