Probably a bad batch. I watched the videos from Dr. Watched Tim on YouTube and followed all the instructions. Also used Dr. Tim's Ammonia. I am now 8 days old and my ammonia has been stable at 2ppm and there has been no sign of nitrite or nitrate. I emailed their customer service and they asked for a batch number but I didn't seem to have kept the bottle. I'm not saying it didn't work for you, but it didn't work for me.
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