I had my ammonia and nitrite spikes and it's been over 6 weeks, and everything has been at zero for about a week. A few times it looks like I may have <<.25ppm Ammonia, but it's hard to read thes test tubes sometimes. I was told I may not show Nitrate because I have real plants. I haven't used any plant fertilizer either, so maybe the plants are using the Nitrate??? Or maybe I should get a new testing kit???