I have a few times in the past. Now when i test phosphates I also test nitrates. I do the phosphate test first and while i'm waiting for results I get the sample ready for the nitrate test
I've done it plenty of times..make sure to set a timer now when I test. Or what sucks is if you quick click it and don't hold for it to get to the timer.
I've done it plenty of times..make sure to set a timer now when I test. Or what sucks is if you quick click it and don't hold for it to get to the timer.