NO3 or NO3-N?

[Hot_tuna]

Hello everyone!

I am a littel confused about haw you express nitrate. As you probably know you can write for exampel 5 mg/l NO3-N or you can express the same level of nitrate as 22 mg/l NO3...

So my question is what you use in the "aquarium world" especially when you only write ppm?

 

[wade1]

It depends on the test kit being employed. They measure different things.

Check your manufacturer for exactly what is being tested... a good example is alkalinity. It is frequently measured as carbonate.

Wade

 

[AF Founder]

Hello everyone!

I am a littel confused about haw you express nitrate. As you probably know you can write for exampel 5 mg/l NO3-N or you can express the same level of nitrate as 22 mg/l NO3...

So my question is what you use in the "aquarium world" especially when you only write ppm?

The question is whether you're measuring nitrate/nitrogen or the nitrate ion. If I recall correctly nitrate/nitrogen has to be multiplied by 4.4 to get the concentration of the nitrate ion. Check to see what your kit is actually measuring.

 

[nigle]

Hello everyone!

I am a littel confused about haw you express nitrate. As you probably know you can write for exampel 5 mg/l NO3-N or you can express the same level of nitrate as 22 mg/l NO3...

So my question is what you use in the "aquarium world" especially when you only write ppm?

The question is whether you're measuring nitrate/nitrogen or the nitrate ion. If I recall correctly nitrate/nitrogen has to be multiplied by 4.4 to get the concentration of the nitrate ion. Check to see what your kit is actually measuring.

Oi!

Yes you are correct 4.4, and I'm so ammused by reefers that talk about their 0 nitrates, [when if they were actually 0 nothing would be alive to create nitrates, but that is another jag for another time] or 10 or 20 when the test kits they are using is not testing for “total nitrate”. Nitrate-nitrogen (NO3-N) would have to be multiplied by 4.4 to get to “total nitrogen”. The [clear to purple] tests are in need of multiplying by 4.4 to get total nitrogen, and when they test with the [yellow to red] tests the test are total nitrogen and therefore higher in number.

I was having a long e-male discussion with the Aquarium Pharmaceuticals people about their test. If I use theirs the nitrates were 'high', and if I use the [clear to purple] tests they were lower, but if you then multiply the lower by 4.4 you get the readings that I got with AP tests.

So spread the word, if they are testing with the [clear to purple] tests and have a reading of 20 they actually have readings of 88!

So much for the 0's in the world!

Cheers!
nigle
!~!

 

[nigle]

Hello everyone!

I am a littel confused about haw you express nitrate. As you probably know you can write for exampel 5 mg/l NO3-N or you can express the same level of nitrate as 22 mg/l NO3...

So my question is what you use in the "aquarium world" especially when you only write ppm?

The question is whether you're measuring nitrate/nitrogen or the nitrate ion. If I recall correctly nitrate/nitrogen has to be multiplied by 4.4 to get the concentration of the nitrate ion. Check to see what your kit is actually measuring.

Oi!

Yes you are correct 4.4, and I'm so ammused by reefers that talk about their 0 nitrates, [when if they were actually 0 nothing would be alive to create nitrates, but that is another jag for another time] or 10 or 20 when the test kits they are using is not testing for “total nitrate”. Nitrate-nitrogen (NO3-N) would have to be multiplied by 4.4 to get to “total nitrogen”. The [clear to purple] tests are in need of multiplying by 4.4 to get total nitrogen, and when they test with the [yellow to red] tests the test are total nitrogen and therefore higher in number.

I was having a long e-male discussion with the Aquarium Pharmaceuticals people about their test. If I use theirs the nitrates were 'high', and if I use the [clear to purple] tests they were lower, but if you then multiply the lower by 4.4 you get the readings that I got with AP tests.

So spread the word, if they are testing with the [clear to purple] tests and have a reading of 20 they actually have readings of 88!

So much for the 0's in the world!

Cheers!
nigle
!~!

 

[nigle]

Hello everyone!

I am a littel confused about haw you express nitrate. As you probably know you can write for exampel 5 mg/l NO3-N or you can express the same level of nitrate as 22 mg/l NO3...

So my question is what you use in the "aquarium world" especially when you only write ppm?

The question is whether you're measuring nitrate/nitrogen or the nitrate ion. If I recall correctly nitrate/nitrogen has to be multiplied by 4.4 to get the concentration of the nitrate ion. Check to see what your kit is actually measuring.

Oi!

Yes you are correct 4.4, and I'm so ammused by reefers that talk about their 0 nitrates, [when if they were actually 0 nothing would be alive to create nitrates, but that is another jag for another time] or 10 or 20 when the test kits they are using is not testing for “total nitrate”. Nitrate-nitrogen (NO3-N) would have to be multiplied by 4.4 to get to “total nitrogen”. The [clear to purple] tests are in need of multiplying by 4.4 to get total nitrogen, and when they test with the [yellow to red] tests the test are total nitrogen and therefore higher in number.

I was having a long e-male discussion with the Aquarium Pharmaceuticals people about their test. If I use theirs the nitrates were 'high', and if I use the [clear to purple] tests they were lower, but if you then multiply the lower by 4.4 you get the readings that I got with AP tests.

So spread the word, if they are testing with the [clear to purple] tests and have a reading of 20 they actually have readings of 88!

So much for the 0's in the world!

Cheers!
nigle
!~!

 

[nigle]

Hello everyone!

I am a littel confused about haw you express nitrate. As you probably know you can write for exampel 5 mg/l NO3-N or you can express the same level of nitrate as 22 mg/l NO3...

So my question is what you use in the "aquarium world" especially when you only write ppm?

The question is whether you're measuring nitrate/nitrogen or the nitrate ion. If I recall correctly nitrate/nitrogen has to be multiplied by 4.4 to get the concentration of the nitrate ion. Check to see what your kit is actually measuring.

Oi!

Yes you are correct 4.4, and I'm so ammused by reefers that talk about their 0 nitrates, [when if they were actually 0 nothing would be alive to create nitrates, but that is another jag for another time] or 10 or 20 when the test kits they are using is not testing for “total nitrate”. Nitrate-nitrogen (NO3-N) would have to be multiplied by 4.4 to get to “total nitrogen”. The [clear to purple] tests are in need of multiplying by 4.4 to get total nitrogen, and when they test with the [yellow to red] tests the test are total nitrogen and therefore higher in number.

I was having a long e-male discussion with the Aquarium Pharmaceuticals people about their test. If I use theirs the nitrates were 'high', and if I use the [clear to purple] tests they were lower, but if you then multiply the lower by 4.4 you get the readings that I got with AP tests.

So spread the word, if they are testing with the [clear to purple] tests and have a reading of 20 they actually have readings of 88!

So much for the 0's in the world!

Cheers!
nigle
!~!

 

[nigle]

Oi!

Well I don't know what happened, but I didn't want it to post 4 times!

Maybe 4.4 times, HA!

Cheers!
nigle
!~!