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post #1 of 8 (permalink) Old 08-03-2018, 04:46 PM Thread Starter
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Cycle questions

OK I have a 125 gallon that I used the filter media from another tank and has been set up for about 2 1/2 weeks.I have tested the water, here are the results, Should I do a water change ? or let I run it cycle more.
Ammonia .25
Nitrite 5.0
Nitrate 5.
PH 6.8

125 Gallon, C02, planted tank
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post #2 of 8 (permalink) Old 08-03-2018, 04:51 PM
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Leave as is. Make sure there is always ammonia present to keep the cycle going. Only do a water change when the nitrates creep up to high levels. Keep temps in the mid 80's to help bacteria multiply faster.

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post #3 of 8 (permalink) Old 08-03-2018, 05:46 PM Thread Starter
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How High is to High for Nitrates, I also have fish in the tank.
Do my numbers look OK

125 Gallon, C02, planted tank
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post #4 of 8 (permalink) Old 08-03-2018, 05:51 PM
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Oh... Fish...

Nitrites are way too high, I would get that down to 0.25.

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post #5 of 8 (permalink) Old 08-03-2018, 07:55 PM
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Cycle questions

You are not seeing issues in your fish with nitrites that high? I am surprised, that is s lethal level. Look up “Brown Blood Disease” in fish for symptoms and change water asap. No nitrite level is acceptable when have fish in while cycling.

https://www.thesprucepets.com/nitrite-poisoning-1378485


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post #6 of 8 (permalink) Old 08-05-2018, 12:21 AM Thread Starter
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I did a water change and brought the nitrites down to .50.
Nitrites .50
Nitrates 5.0
Ammonia .25
Should I do another water change..I'm afraid if I do I will not have any ammonia left.
Fish are acting fine..no gasping or acting funny . What to do?

125 Gallon, C02, planted tank
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post #7 of 8 (permalink) Old 08-05-2018, 12:31 AM
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Quote:
Originally Posted by Len B View Post
I did a water change and brought the nitrites down to .50.
Nitrites .50
Nitrates 5.0
Ammonia .25
Should I do another water change..I'm afraid if I do I will not have any ammonia left.
Fish are acting fine..no gasping or acting funny . What to do?


You do not want ammonia left with a fish in cycle. Change water.


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post #8 of 8 (permalink) Old 08-06-2018, 11:29 AM Thread Starter
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I will do another water change, How will I know the tank has cycled, I have nitrates, does that mean the cycle has finished and I just need to remove the nitrites and ammonia from the water.

I just did a water change and test are 0 now.
Ammonia 0
Nitrites. 0
Nitrates 0
What should I look for next..what should happen now..am I good to go for a new fish ..

125 Gallon, C02, planted tank

Last edited by Darkblade48; 08-13-2018 at 11:34 AM. Reason: Please use the edit function for back to back posts to keep threads cleaner
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