5 weeks flower

I am 2 day into the 5th week of flower (4th if you don't count the week it took to show pistils), and my upper leaves are crispy I'm using 45 actual watts led and 1 32 watt CFL they started this about 3 weeks ago. They are about 7 inches away from the Lights. Waterings and feeding ph'd at around...

I'm at the end of week 5 of flower and am having a few leaves showing symptoms of a Magnesium deficiency... I think?! I'm using a pH perfect nute system in coco coir (see pics) . Had great success with this system in past grows and no issues like this one. It seems to only be affecting the...

My plants have to suffer a 24 hour period of darkness today cause I had to go in for surgery does any1 know what this will do or how it might negatively impact my grow???