05-25-2013, 06:38 PM
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Originally Posted by Neil D
So I set up my tank about a week or so ago. I know my tap water has naturally occurring levels of ammonia in it, about .3 mg/L. There are no fish currently
My levels read:
.25-.5 ppm ammonia
.25-.5 ppm nitrite
1-5 ppm nitrate (hard to tell color)
So my tank is going through somewhat of a cycle, I guess. I was planning on bringing in fish tomorrow. I was informed that because of my already established tank, I can put in some substrate, decor, and filter media for an "insta-cycle". I just wanted to be sure this would be okay. I also use Prime conditioner, which I know renders ammonia harmless for about 24 hours.
heated 80 F
filtered, marineland penguin 350
Your tank is not already established, that takes months. Once you see the nitrites drop to zero it is time to start thinking about fish as the cycle will be working fully at that point. With your ammonia loaded tap water at least you don't need to add an ammonia source and the tank will cycle all on its own. If you haven't already put substrate etc in, do it now anyway but hold off on the fish or you will need to add prime every day or two to keep the fish from suffering from ammonia and nitrite poisoning. Even with your tap water ammonia the tank should read zero ammonia after a few hours of a water change and if you add prime with the water change this will not affect the fish.