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Discussion Starter · #1 · (Edited)
My tank is cycled now and the ammonia and nitrites go to zero overnight after adding ammonia each day.
My nitrates are at 20ppm and holding.
PH is 6.8

I have done a 50% water change the last two days that brought the nitrates down.

What is considered a safe level of nitrate for fish and shrimp?
 

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Even 80ppm or more can be ok. As Burito said, aim for 10-30ppm NO3 and don't trust that test kit, ok to give you an idea only. Even 0 may not be a real 0. Depending on the setup, low NO3 can trigger a BGA bloom.
 
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