Measuring par?

[shadow_k]

Hey guys
I have a question when I use my par meter should I measure the par with just blue lights ? And add white to my preference? Or should I measure both ?

 

[Mywifeisgunnakillme]

Measure with both lights on.

 

[Hooz]

Set the lights to your color preference, then test PAR at the max intensity of your schedule.