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I have no fish in my 6.5 gallon tank. Should i change water?

511 Views 1 Reply 2 Participants Last post by  Death_by_Dinosaurs
Out of all my tanks one of them show no3, and No 2. There is no fish in this tank. Should I change the water. Here is what shows, should I change the water?
N03 50 ppm
N0 2 1ppm
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Yes. 10% weekly is a good target
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