Calcium Deficiency.

I've had very few problems with my grow until now. 5 weeks into flower. White widow in 5 gal pots. 600w HPS 20 inches from my tallest bud in a 4x4 tent. 68 degrees in the dark 75-77 during lights on. Happy Frog soil. Fox farms nutes every other watering. Tiger Bloom, Big Bloom, Cal/Mag. I've been using 1 tsp of Cal/Mag every other watering up until now and the only thing I can think of is that the plants are getting a lil bigger. Should I up the strength? I've also read that my plants could be getting nute block if the roots are too compacted but they don't seem to be. Any advice??

Not enough N in just BB and TB. Needs Nitrogen/cal/mag. Hurry with this...you only have a few more weeks to use N in flwr. Up the cal/mag to 2 tsp 1x's a week till shes done

Thx. I'll switch back to Grow Big for 2 more weeks and up my Cal/mag dosage starting next watering. One of my plants is a little further along than the other and already started getting red hairs on her. Should I do the same with her or stick with my Tiger Bloom?

You are 5 weeks into flower!

Dont use veg nuts any more, alot of ppl will use veg nuts just the first week or two of flowering.

Just add cal mag!

I cant see any N defs

The light green foliage/spots is cal\mag