I am a little nervous about my cycle. I started this last Thursday, so tomorrow evening will be 7 days. Over the first three days after spiking the NH4Cl, the API test dropped from 1.0 to 0.25ppm. I then re-spiked it back to 1.0ppm (actually, I though I put enough drops of NH4Cl to spike to 2.5ppm, but the API test kit looked like just a tiny shade darker than 1.0), but it has been holding constant over the last three days. NO2 and NO3 have been rising, so I am hoping organic matter in the LiveSand is decaying and producing an additional source of NH4Cl; otherwise, my Nitrosomonas have gone dormant or died off (arrgg..). Patience is key. Since my NO2 levels are rising, I assume things are OK as that would not be happening if they did; but I would feel much better if the NH4+ was dropping.