Quote:
Originally Posted by smaug
Over the past few months I have been getting high nitrate levels using api liquid agents even from my tap water it was in the 40-50 range.I decided to get my water tested profeesionally to see what is up.The fellow checked my tap water twice and it was only 2-4PPM he also checked my aquarium and got just a liitle more3-5 PPM.I've often wondered if the testing supplies we use are really that accurate.BTW I did do the tests correctly with all the correct amount of times observed and the shaking it up and such.Has anyone else experianced this?
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Wait, but API are suppose to be
all great(huge lapping froth of sarcasm)???
That's what some folks claim, I'm not among that group however.
I test professionally and use either two or three point calibration methods as standard procedure.
Were the results in N-NO3 or as NO3?
Multipy by 4.4 to account for the O3's on NO3 if it's [N-NO3].
Of all the hobby test kits we have used, Lamotte and Hach have been consistently accurate for any hobby use. These run about 40-50$ but are well worth the $.I think several folks tested and found Seachem to be highly rated. Unfortunately, they and most places use a poor method to compare color. Lamotte and Hach use a much nicer method.
FYI, Seachem uses the same method as Lamotte's kit.
Regards,
Tom Barr