N03 Red Sea Pro test and API test kit....... I need help !!!!

[nemodan]

Hi

Is there anyone in the forum using the Red Sea Pro NO3 kit ?

I have been using the API kit for long time and after reading many threads about SPS and the relation of PO4/NO3 present in the tank, I decided today to buy the more accurate Red Sea NO3 test.

I almost passed away after I saw my first result using the low range testing .... it was out of range . In the below picture means more than 4 ppm.

So I have to do the high range test, diluting the sample with Distilled water, as you can see in the below picture. And the result was 16 ppm



How can this be possible if the API test tells me it is 0 ppm or slightly over 0 (See picture)



If I really have 16 ppm , then the API test kit will be orange, with a color around 10 or 20 ppm in their scale.

What am I doing wrong ??????

Thanks
Daniel

 

[brett7768]

api is crap. use the redsea from now on. 16ppm isnt the end of the world either. alot of people try to keep nitrates 5-10ppm

 

[reefmutt]

Hm.. I find this a little strange. I have not found that big a discrepancy between the api and the Red Sea.. You may want to spend the few bucks on another api kit to double check or get a store or a buddy to test with their kits..
Yes api is not as accurate, but thats way off..