Tropical Fish Keeping - Aquarium fish care and resources

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-   -   Testing Tank Levels Help (

omgPlaty 03-20-2009 07:47 PM

Testing Tank Levels Help
I was just wondering; do I do the testing before are after I do a water change? I got my kit today and it doesn't say if I should wait a few minutes after water changing or do it before hand...don't know. :oops:

dramaqueen 03-20-2009 07:49 PM

You do it before so you'll know how much to change.

Amphitrite 03-20-2009 08:22 PM

If you were to change the water after a water change then you wouldn't be getting an accurate reading of the tank's parameters. Always test before a change. I always think test kits should give clearer instructions :-)

dramaqueen 03-20-2009 08:26 PM

I would agree with that. lol

plessans 03-21-2009 03:52 AM

You should test before AND after to make sure the intended change happened. Especially at the end of cycling a tank your nitrates might be through the roof and one water change might not be enough. That's why it's a good idea to do a test after to know if you need to do a second water change.

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