Dosing "" N03 "" are you crazy!!! maybe I am.

[techbiker]

I do not have the ultra low hi736 model i have the low range hi713 model.
i would be interested in trying the hi736 model.

I fully believe there is nearly 0ppm. I have none of the normal high p04 related issues. I don't mind 0 p04 so much, its the nitrate thats usually 100X as high as the p04 in your tank.. the 1 ppm vs the .02 ppm as common targets. sometimes as much as 5 ppm or higher and .02 ppm for some folks.

I have been working with Hanna, and have those for sale in large scale, from the general; feedback I got is when you test with them always do a first test and then a second one 9 out of 10 times the 2nd and the 3rd test will be very close if not exact