Newbie here! Been cycling 2 months now. Ammonia hit 0 at 2 weeks or so, and I added 2 clowns. They are very happy. Nitrites went up to 2.0ppm. Nitrates slowly rose at about week 6 to 30ppm. I have 100gallon tank and 20gal sump. Is my testing off? I keep looking and reading I may have somehow stalled? I have diatoms. TY!!