04-08-2007, 10:29 AM
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Sorry, I just meant that naturally my nitrates are higher than before a water change. I test for ammonia all the time and it's virtually always zero. It will go to 0.25 the day after I feed frozen foods for some reason. Anyway, I've had the tetras about 5-6 weeks and have noticed this the past several weeks. They used to hide on me when I approached but now stay in the open, especially if it's feeding time. :) Maybe darting is a better word to use than jerking, but it happens five or six times then they go back to swimming normally. It's a sharp, quick downward motion.