Can Nitrites/Nitrates "settle" ?
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Can Nitrites/Nitrates "settle" ?

This is a discussion on Can Nitrites/Nitrates "settle" ? within the Beginner Freshwater Aquarium forums, part of the Freshwater Fish and Aquariums category; --> OK so I was doing my weekly water change on one of my tanks (10g) Right after the water change I tested my perameters, ...

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Can Nitrites/Nitrates "settle" ?
Old 01-05-2011, 04:23 PM   #1
 
cbirk's Avatar
 
Can Nitrites/Nitrates "settle" ?

OK so I was doing my weekly water change on one of my tanks (10g)

Right after the water change I tested my perameters, and I got

Ammonia: .25
Nitrite > 5
Nitrate: 80

I am sure you can imagine my initial response. This tank has been cycled and established for over a year with no problems (minus some algea flareups from time to time)

So I waited for the tank to settle (there was still some floaties from the substrate when I tested the first time) and tested again, waited 5 minutes and got the following results

Ammonia: .25
Nitrite: 0
Nitrate: 0

I was initially worried that I had somehow caused my tank to get back into a cycle some how but I haven't changed anything other than my water changes in quite awhile. A month ago I had cleaned some algea of some decor but other than that, no new fish, no dead fish, no increase or decrease in light or feeding, etc.


So I guess what I want to know is, can Nitrites and Nitrates "settle" in the substrate? and if so Should I be concerned about that initial reading? does it matter?
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Old 01-05-2011, 04:39 PM   #2
 
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As far as I understand, they don't "settle". Nitrites and Nitrates are suspended in the water.

Have you tested your tap water? Is it possible that those readings come from your tap water, and your BB filter took care of them by the time you re-tested?
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Old 01-05-2011, 04:42 PM   #3
 
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tap tests at 0. it may be possible that I just mixed two bottles are something I guess. thought it was odd.
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