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Old 03-29-2013, 03:06 AM   #11
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oh yes, add it before adding the water. Forgot to mention that
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Old 03-29-2013, 07:53 AM   #12
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oh yes, add it before adding the water. Forgot to mention that
This is also gonna sound silly but ur not pretreating the water that is going into the tank ur just adding the conditioner to the tank before adding the water right? I wouldn't know any other way to do a 50% change on a 55 gallon. Thank you for the advice by the way!
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Old 03-29-2013, 08:26 AM   #13
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This is also gonna sound silly but ur not pretreating the water that is going into the tank ur just adding the conditioner to the tank before adding the water right? I wouldn't know any other way to do a 50% change on a 55 gallon. Thank you for the advice by the way!
Yes you put the water conditioner directly into the tank before adding new water to the tank. Another thing some of us do is leave the filter off for a few minutes after the tank is refilled. I don't know if it really helps protect the BB in the filter or not but it makes me feel better to think it does.
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Old 03-29-2013, 08:27 AM   #14
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This is also gonna sound silly but ur not pretreating the water that is going into the tank ur just adding the conditioner to the tank before adding the water right? I wouldn't know any other way to do a 50% change on a 55 gallon. Thank you for the advice by the way!
Yep, if you use a water changer you can just dose the tank for the full volume of the tank (not just the water you are replacing) and then refill. What dechlorinator are you using now? Prime is one of the best if you can get it. What fish do you have? WIth nitrite at 5 I wouldn't wait to do a water change, I'd do a few 50% water changes now to get nitrites down as that level is toxic to fish.
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Old 03-29-2013, 11:57 AM   #15
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Yep, if you use a water changer you can just dose the tank for the full volume of the tank (not just the water you are replacing) and then refill. What dechlorinator are you using now? Prime is one of the best if you can get it. What fish do you have? WIth nitrite at 5 I wouldn't wait to do a water change, I'd do a few 50% water changes now to get nitrites down as that level is toxic to fish.
I'm gonna buy prime. I have the API dechlorinator. Yea I'm doing a 50% this afternoon. I'm just confused as to why after doing a 25% change to get my ammonia down the nitrites spiked. They were very low before the water change.
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Old 03-29-2013, 03:48 PM   #16
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Hi, they spiked because you have a larger colony of BB converting ammonia to Nitrites. If you didn't have high nitrites your ammonia would be high. Now your Nitrite converting BB must increase to convert all of your Nitrites into Nitrates. As somebody mentioned, you are close to the end of the cycle. Check out the attached nitrogen cycle

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Note the peak in the NO2 then the peak in the NO3 that follows.
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Old 03-29-2013, 05:58 PM   #17
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Hi, they spiked because you have a larger colony of BB converting ammonia to Nitrites. If you didn't have high nitrites your ammonia would be high. Now your Nitrite converting BB must increase to convert all of your Nitrites into Nitrates. As somebody mentioned, you are close to the end of the cycle. Check out the attached nitrogen cycle

Note the peak in the NO2 then the peak in the NO3 that follows.
Thank u! Does this mean the water change that was suggested was a bad idea?
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Old 03-29-2013, 06:18 PM   #18
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Absolutely not. Ammonia and Nitrites are toxic to fish. You must typically keep them below .25 ppm and as close to 0 as possible. I know this seems counterproductive for the beneficial bacteria in the tank but higher levels will kill your fish. Also, please note that at higher temperatures and higher pH the lethality of ammonia will increase so try and keep stable water conditions. Large swings in pH is indicative of low KH or carbonate hardness in your tap. I don't know what kind of fish you have but mixing in some crushed coral or Aragonite in your substrate or adding some limestone rocks may help you stabilize this but will also raise your pH. If your fish are compatible with higher pH you can try this.
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