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cycling question

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1.3K views 2 replies 2 participants last post by  cullens089  
C
#1 ·
ok so i test my tank every other day and also do a 25% water change and still cant get my nitrites down. there still at 2.0 for a week. while my ammonia is at zero and my nitrates at 5.0. these numbers stay about the same with not much change. any help other then using a chemical to get the nitrites down.
 
J
#2 ·
CU:

Something is really wrong here but please do not use chemicals.

1) Are you cycling with fish or doing a "fishless cycle"?

2) Have you checked your tap water for nitrites?

3) Have you checked your tap water after adding a dechlorinate for nitrites.

4) What type of and how much of biological filtration media do you have?

TR
 
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