I suppose, except that there is no value I can think of to seeing the trend even if you had the equipment to do so. The test needs to be over quite a few hours so the signal is large enough to "hear" over the noise, and it really is a yes/no test (algae/no-algae).
I would agree that hand titrating reagents definitely leads to too much possible error in the FC value if you're trying to look at it over very small time scales. No reasonably good method exists to make short time scale measures of FC useful.
Thanks for the discussion! It's a nice feature of TFP to be able to bounce ideas off the experts and learn from their experiences!!
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