Surface agitation and PAR

[MikeyZo]

How much does surface agitation affect PAR? I assume given reflection and refraction angles it must have a noticeable affect especially directly under the returns.

 

[Subsea]

Good luck with those numbers. Of course it has an effect.

Take PAR readings during normal operation, then turn off all circulation and remeasure.

 

[get-salty]

i would take par with pumps off then again with pumps on and adjust accordingly with pumps on.

You want the stable par when pumps are on.