The Great Nitrate #2 Shake Debate - The Planted Tank Forum
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post #1 of 4 (permalink) Old 04-22-2018, 06:25 PM Thread Starter
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Lightbulb The Great Nitrate #2 Shake Debate

This has been covered left to right, up and down this forum but I have a slightly uncovered thought. The shaking is either to break up/mix the solution or to add air bubbles into it. I am usually running tests on 2-3 tanks back to back within 15-20min.

This brings up the thought about shaking bottle #2 for 30 seconds. Before my first test I shake it for 35 seconds (extra 5 to make sure). Then I shake the test itself for 65 seconds (again, extra 5 to make sure). Then typically within 20min I run another test, and I am starting to wonder if it is necessary to shake bottle #2 for 30 seconds again or if 15 seconds would be enough. By the time I get to my third test I have shaken bottle #2 for 90 seconds within an hour so I ASSUME overshaking the #2 bottle can do no harm (overshaking the test itself is a different story).

Yes I know, I am overthinking this...whats new.


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post #2 of 4 (permalink) Old 04-22-2018, 07:53 PM
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There is a plus side to this.
You must have read the directions which is way more than most!

Always shake the bottle before any testing.
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post #3 of 4 (permalink) Old 04-22-2018, 11:09 PM
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Quote:
Originally Posted by Teebo View Post
This has been covered left to right, up and down this forum but I have a slightly uncovered thought. The shaking is either to break up/mix the solution or to add air bubbles into it. I am usually running tests on 2-3 tanks back to back within 15-20min.

This brings up the thought about shaking bottle #2 for 30 seconds. Before my first test I shake it for 35 seconds (extra 5 to make sure). Then I shake the test itself for 65 seconds (again, extra 5 to make sure). Then typically within 20min I run another test, and I am starting to wonder if it is necessary to shake bottle #2 for 30 seconds again or if 15 seconds would be enough. By the time I get to my third test I have shaken bottle #2 for 90 seconds within an hour so I ASSUME overshaking the #2 bottle can do no harm (overshaking the test itself is a different story).

Yes I know, I am overthinking this...whats new.
Hi Teebo,

When I contacted API they explained that the solution in the #2 bottle separates, precipitates, and crystallizes easily; the shaking is required to break up the crystallization and get the chemical back into a well mixed solution. I too do multiple tanks when doing water parameters, when doing nitrates I do the initial 30(+) second shake and then for subsequent tanks just 10 seconds or so just to insure a uniform solution in the #2 bottle. I do the full 1 minute shaking (step 6) after adding both solutions to the vial and wait the five minutes before comparing to the chart.
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post #4 of 4 (permalink) Old 04-23-2018, 12:29 AM
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...or you can try the Salifert kit. It is much easier to distinguish the color levels and no shaking required.
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