Is this p deficiency?

I’ve recently noticed these leaves and want to be sure before I act on solving it. Can I get some advice before I feed it this tiger bloom fertilizer while in veg. Note that some leaves have light tan spots but I believe that’s my fault for spraying some garden safe insecticidal soap on my plant a few hours before light was scheduled for cut off. If that’s not the case some insight to that would be nice too.
 

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600 w light
Fox farm grow big
Happy frog soil
Soil ph is 7 which is a tad higher than I’d like
Tent is 76 degrees with 40% humidity
Currently on week 6 of veg
 
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