The Planted Tank Forum - View Single Post - cycled filter left for a few days.
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post #12 of (permalink) Old 11-14-2012, 05:05 AM Thread Starter
Wannabe Guru
Join Date: Dec 2004
Posts: 1,797
I confirmed that my test kit works by testing my other tank thats cycled.

and I have had a spong filter in there for 2 weeks from my other tank

Could it just be that the plants are absorbing everything?
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