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post #1 of 5 Old 04-14-2011, 01:22 AM Thread Starter
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Question Hint of ammonia after cycling

Started a fish less cycle a few weeks ago using only ammonia and kept it between 3-5 ppm. Nitrites raised up to 5 ppm and Nitrates raised up to about 20-40ppm. A few days ago we couldn't keep the ammonia levels up no more and the nitrites were dropping back down too which obviously indicated the cycle was nearing the end. (I'm testing using API's Master Kit)

Ok, so here's the strange thing The Nitrites read at 0, Nitrates read at about 5 - 10 ppm, (20ppm before we did a small water change today/yesterday), but the ammonia reads almost .25ppm...just a small, small hint of yellow/green ammonia. I tested it against the tap water just to make sure and if you compare it very closely you can see a just a small hint of green.

I'm wondering if I should do a bigger water change or is it ok? I mentioned this to the LPS guy and he said when you add fish the ammonia from them wont get processed instantly anyway and you'll see a small spike.

Last edited by jcgallaher; 04-14-2011 at 01:24 AM.
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post #2 of 5 Old 04-14-2011, 01:48 AM
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Originally Posted by jcgallaher View Post
Started a fish less cycle a few weeks ago using only ammonia and kept it between 3-5 ppm. Nitrites raised up to 5 ppm and Nitrates raised up to about 20-40ppm. A few days ago we couldn't keep the ammonia levels up no more and the nitrites were dropping back down too which obviously indicated the cycle was nearing the end. (I'm testing using API's Master Kit)

Ok, so here's the strange thing The Nitrites read at 0, Nitrates read at about 5 - 10 ppm, (20ppm before we did a small water change today/yesterday), but the ammonia reads almost .25ppm...just a small, small hint of yellow/green ammonia. I tested it against the tap water just to make sure and if you compare it very closely you can see a just a small hint of green.

I'm wondering if I should do a bigger water change or is it ok? I mentioned this to the LPS guy and he said when you add fish the ammonia from them wont get processed instantly anyway and you'll see a small spike.
Might test the tapwater for ammonia and would use Prime for dechlorinator if not already.
Might also perform 50 percent water change and test again after an hour or two.

The most important medication in your fish medicine cabinet is.. Clean water.
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post #3 of 5 Old 04-14-2011, 04:48 AM
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My tank (cycled for a year, planted and heavily stocked) reads the same - a hint of ammonia <0.25. I haven't noticed any problems and my panda corys lay eggs on a regular basis
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post #4 of 5 Old 04-14-2011, 08:51 AM Thread Starter
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I tested both tap and tank twice at two different times just to compare them. Tap was yellow and the tank was just a tiny, tiny bit green almost .25 and it had been atleast 24 hours since we added any ammonia. We did condition the water, used aqueon water conditioner.

I'm going to check everything again this morning and see if anything changed before I get fish.
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post #5 of 5 Old 04-14-2011, 09:22 AM Thread Starter
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and it's a False positive. I checked the Nitrites again they're clearly not at 0 yet. So I added just a little ammonia to keep the cycle going since this will day two of not adding any.

Thanks everyone for the replies and help
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