Sorry, I was there for the meeting yesterday and what was supposed to be a pop by turned into a long wait but I couldn’t participate in the discussion. regardless I did want to ask one question.
When taking PAR readings, do you take it with still water surface or with surface movement as you would have during standard operation of tank?
the reason for the question is, refraction of light due to ripple of surface. The par reading will keep jumping up and down if your surface is not still. And if you measure par with still surface you know you me corals are not getting same PAR continuously but in waves.
so what is the right way to measure ?