Tropical Fish Keeping - Aquarium fish care and resources

Tropical Fish Keeping - Aquarium fish care and resources (http://www.tropicalfishkeeping.com/)
-   Beginner Freshwater Aquarium (http://www.tropicalfishkeeping.com/beginner-freshwater-aquarium/)
-   -   testing after water change (http://www.tropicalfishkeeping.com/beginner-freshwater-aquarium/testing-after-water-change-5628/)

tcr03 05-04-2007 09:19 PM

testing after water change
 
how long after i do a water change do i need to wait to test the water again for nitrates and nitrites

xxthrwitdwnxx 05-04-2007 09:34 PM

2-3 hours is plenty or even an 1 hour

Andyandsue 05-07-2007 08:36 PM

I used to test about 15 minutes after the change and I saw a different reading. It shouldn't really matter as long as the water is being circulated. If the bacteria are out they are out.


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