How often do you perform the Chlorine drop test (with the DPD powder) from the TF-100? My target FC is 5. I use the simple Taylor chlorine/pH test kit for daily stuff - but it is nearly impossible for me to distinguish between the 2, 3, or 5 ppm levels with the yellow color comparison (not to mention that it doesn't test beyond 5 anyway).
I love the accuracy of the drop test in my TF-100 kit but usually just use it for my weekly round of complete tests, or the OCLT.
Just wondering if there's another option for accurate daily FC testing to make sure I don't dip below 5 and risk an outbreak. Or maybe the drop test is just the way to go.
SWG at 40%, pump running about 10 hrs