Cycling tank problems ??

[brew86uk]

Hi ppl I am 5days into cycling tank the ammonia is shooting down so topped up to 4ppm my nitrites are about 5ppm but my nitrates are around 40ppm is that high or Normal at this point in the cycle ??


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[Leeatl]

That sounds ok , but very fast . Did you have some cycled filter media ? I would do a %50 WC to get the nitrates down as they will stall the cycle if too high .

 

[brew86uk]

The tank has been used and setup before so a 50% WC ?? Still add ammonia ??


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[brew86uk]

What's the plan ??


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[Leeatl]

If the tank was left dry between uses it doesn't matter . All the bacteria was dead . Yes at least 1/3 WC and continue with ammonia and testing to be sure it is cycled then add fish . Oh you didn't say if you got filter media from an established tank?

 

[Leeatl]

Also check out this link . All you need to know.....

Fishless Cycling