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Discussion Starter · #1 ·
been seeing 2.0 nitrites in tank for last 2 weeks. Ive done 4 water changes during this time at about 30-40% and they still havent fell. ammonia is at .25 and nitrates is 10-20,hard to tell difference from the orange . This is 6th week of cycling. Ive got 5 zebra danios and 2 giant danios,lost a couple of giants
 

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been seeing 2.0 nitrites in tank for last 2 weeks. Ive done 4 water changes during this time at about 30-40% and they still havent fell. ammonia is at .25 and nitrates is 10-20,hard to tell difference from the orange . This is 6th week of cycling. Ive got 5 zebra danios and 2 giant danios,lost a couple of giants
Cycling a tank should be done without the fish, for as you see, lossess can happen. And a cycle is hard to define as how long. Usually they run 6 weeks. And its not the Trates you should worry about, the Ammonia is the worst then Trites. The trates are not all that harmful unless in extremely high ranges.
 

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Discussion Starter · #3 ·
No need to respond to thread if you don't have the answer. I chose to cycle with fish as many of us do. I know it's ammonia, then nitrites as being harmful. Would just like to know on average how long it takes for nitrites to fall after they peak.
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smit3183;839167[B[B said:
]]No need to respond to thread if you don't have the answer[/B][/b]. I chose to cycle with fish as many of us do. I know it's ammonia, then nitrites as being harmful. Would just like to know on average how long it takes for nitrites to fall after they peak.
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WOW, really dude...... I believe I did answer that question. I said the cycle take on average 6 weeks. But because you jacked with the way its done, you now have to wait longer. No need, to respond. Hopefully someone else that has more than 12 years experience will help you.......
 

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Discussion Starter · #5 ·
I didn't ask you how long the tank takes to cycle.. I asked how long it takes for nitrites to start dropping once they've peaked.. read the question. Really don't care how long uve been doing fish keeping. Not everyone can be "perfect like you " and do a fishless cycle
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He was simply trying to answer your question that doesn't have a definite answer. A full cycle can take anywhere from 2 to 8 weeks. As far as the spikes of nitrite and amonnia go, it is different for everybody. The ph, hardness, temperature all play a role in how long these spikes take.
 

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Its hard to tell because every cycle is different, my guess is one more week and you should be set, I'm with you and like doing a fish in cycle but it does require every day or every other day water changes to keep the numbers low so the fish can survive, plus you are starting out a bit heavy, most the time most people will recommend you do the cycle with 1-3 hardy fish unless of course you are cycling some monster thats larger then 100 gallons, then more fish would probably be fine.
 

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Discussion Starter · #8 ·
Thank you very much for giving me a better response. I think he basically just tried to sneak in and criticize me for doing a fish in cycle. My ph is high at 8.4,out the tap it's 8.0 and rises after it sits so that's where the 8.4 comes from. Don't know the exact hardness. More than likely very hard. Have a 55 gallon
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That pH is pretty high. Do you have any rocks in the tank? Gravel? The reason I ask is because your pH is going up after sitting. Most of the time it stays where its at or it goes down some. More than likely you have hard water which is also contributing to the high pH.
 

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I won't sneak in....I'll just say it...don't come here and start asking questions then when you don't get the answers you want, start acting like a douche. It's the internet. That's how it works. People don't always respond to your exact question but regardless it's a good way to learn from other's perspectives. Don't like it...go to your LFS and ask them for help. Since you already screwed up it probably won't do much more harm to follow their advice rather than people here that actually know what the heck they are doing.
 

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Discussion Starter · #12 ·
The tap actually rises to 8.4 after sitting out for as day.. nothing in the tank out of ordinary.
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Discussion Starter · #13 ·
OK.. Mr know it all.. what exactly did I screw up.. if your talking about the 2 giant danios that died.. it wasn't from the water paremeters.. they were bullied to death from another danio.. constantly chased into corners and not allowed out.. all my other fish are doing just fine. I'm making sure the ammonia and nitrites are detoxified
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been seeing 2.0 nitrites in tank for last 2 weeks. Ive done 4 water changes during this time at about 30-40% and they still havent fell. ammonia is at .25 and nitrates is 10-20,hard to tell difference from the orange . This is 6th week of cycling. Ive got 5 zebra danios and 2 giant danios,lost a couple of giants
I think the mistake you made was not doing more frequent water changes those first two weeks. With a fish-in cycle it's better to do partial water changes every day or two. I would do 30% daily water changes until the ammonia level drops, then continue to do daily testing for a few additional weeks to monitor it. It can take a few months for a tank to cycle, and you do have quite a few fish. I like to use Prime with water changes, it's a great de-chlorinator that turns ammonia into a non-toxic form, and this will last a day or two.

As for danios, they can be very nippy if there aren't enough in a school. Different types of danios will not necessarily school together, and to keep everyone happy you should have at least five zebras and 5 giants. But I wouldn't add any more fish until you are fully cycled. If you don't plan to increase the number of giant danios in the future, you might consider returning your 2 to the LFS. :)
 

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Discussion Starter · #17 ·
I heard constant water changes slows down the cycle, can I just dose with prime every couple of days until the ammonia and nitrites fall
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No, the ammonia will just continue to build up. Prime is only a temporary fix, and is not going to eliminate a tank full of high ammonia.
 

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Constant water changes do slow up a cycle, but when doing a fish in cylce they are needed for the sake of the fish. If any fish is exposed to to much ammonia then it will die. That is why the fishless cycle is faster because you don't need to do water changes.
 

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I've an observation on cycling with fish that is important to understand. While they may live through it, fish are always stressed and this--with or without internal damage from the ammonia/nitrite--will take its toll. Even at very low levels, both ammonia and nitrite affect fish internally, and it is not reversible; the damage has been done. I would respectfully suggest you all read my article on bacteria for a more complete description:
http://www.tropicalfishkeeping.com/freshwater-articles/bacteria-freshwater-aquarium-74891/

This does not mean you cannot cycle with fish; you can, but it requires some actions as a couple other members have mentioned. Daily water changes of 50% of the tank to keep ammonia and then nitrate near-zero are essential. Using a water conditioner that detoxifies ammonia (some do this) and nitrite (a couple also do this) will also help. Seeding the tank with bacteria from an existing established tank or a quality bacterial supplement will speed up the cycling but not eliminate it. Using live plants basically avoids any issues as the plants will assimilate all of the ammonia/ammonium, so even some floating stem plants help; this is best of all. These points are expanded a bit in the afore-mentioned article.

Byron.
 
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