Bruce, do you take your sechi disk measurments with your polarized sunglass on? I took a few sechi disk measurement Saturday in the shade of my jon boat, with my sunglasses on. I was actually suprised how far down it took to disappear considering the cold water algea bloom that is still going on and since it muddied up a little bit with all this rain, one measurement was 68", the other was 73".
Should I be doing this with out my polarized sunglasses on?
