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- Mar 5, 2017
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Hi everyone, as per thread title, I have a FM phosphate test kit and a recently purchased brand new Hanna HI774 checker with new reagents. Consistently over >5 tests, my FM phosphate test kit produces results of 0.03ppm. However my Hanna HI774 returns consistent result of 0.50ppm, as you can tell the results were vastly different.
So to try and find a solution, i sent a sample of water ( the same sample taken during one of the FM VS Hanna test) for a Reef Factory ICP test and from where i'm located, the test took 2 weeks so i'm not sure if that is a factor to consider. The ICP test shows phosphate of 0.06ppm.
I have been using Hanna checkers for a long time so I know how to use them properly. I always test at the same time of the day and together using the same water sample for both FM and Hanna kits.
What else can I do to try and determine which kit should I trust?
TIA
So to try and find a solution, i sent a sample of water ( the same sample taken during one of the FM VS Hanna test) for a Reef Factory ICP test and from where i'm located, the test took 2 weeks so i'm not sure if that is a factor to consider. The ICP test shows phosphate of 0.06ppm.
I have been using Hanna checkers for a long time so I know how to use them properly. I always test at the same time of the day and together using the same water sample for both FM and Hanna kits.
What else can I do to try and determine which kit should I trust?
TIA