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Old 08-26-2010, 09:35 PM   #1
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is my cycle finished?

so tonight is the second night in a row with 0 ammonia 0 nitrites and my nitrates are somewhere in the 10~20 range? how much longer should i wait to know that i'm cycled?
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Old 08-27-2010, 09:13 AM   #2
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Are you fishless cycling? If so, dose the tank with 4ppm of ammonia and wait twenty-four hours. If the tank converts that ammonia completely to nitrates in that time period, your tank is finished cycling. Do a large PWC and go get some fish!
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Old 08-27-2010, 11:52 AM   #3
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No I have 5 pearl gourami in my 55 gallon planted
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Old 08-27-2010, 11:55 AM   #4
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In that case, you could do a PWC to reduce the nitrate level, measure ammonia, nitrite, nitrate immediately afterwards, then measure again in a few days. You should see zero ammonia, zero nitrite, and an increase in nitrate.
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Old 08-27-2010, 12:32 PM   #5
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Shouldn't I keep a small amount of nitrates in my water for my plants?
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Old 08-27-2010, 01:05 PM   #6
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Unless you're doing constant PWCs, you'll have some level of nitrates. I try to keep my nitrate levels below 20ppm even though I have some plants that are real nitrate sponges.
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Old 08-28-2010, 12:22 AM   #7
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okay ill due a water change in the morning how much would you suggest 50 or 25? i also have diatoms everywhere in my tank so i could use the time to scrub the glass.
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Old 08-28-2010, 12:47 AM   #8
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and i just checked everything and i have 0 ammonia 0 nitrites and 5 ppm nitrates... so my nitrates went down. i just recently started using co2 so maybe my plants are using it rapidly?
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Old 08-28-2010, 01:17 AM   #9
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It is unlikely plants could consume 5ppm in a day though... are you shaking bottle #2 for 30 seconds like in the directions? I guess you haven't done a water change yet so I am intrigued by that nitrate reading.

However if your tank stocked with the gourami is reading 0 ammonia, 0 nitrites for a week I'd say you are cycled I would then wait two weeks to add more fish.
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Old 08-28-2010, 01:23 AM   #10
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i have yet to a water change since start the aquarium. i used safe start so i just monitored all the readings and they never got out of hand so i just let it run it's course. yes i have done the nitrate test many times i sigh every time i have too haha. the nitrates colors are kinda close but i can easly tell the 5 ppm from the 10 ppm but the 10 and 20 looks almost identical impossible for me to tell from the test tube.
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Old 08-28-2010, 01:41 AM   #11
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yup just did the nitrate test again a very light orange no denying it and it was definitely in the 10~20 range yesterday well two days ago now haha
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Old 08-28-2010, 05:31 PM   #12
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okay just did my water change wiped off all the diatoms on the glass that i could get too and my readings are 0 ppm ammonia 0 ppm nitrite on <5 ppm nitrate just a hint of orange.
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