Its hard for me to tell with the purple light. Can we see the plant? Based on what I can tell, the trichs don't look ready but again, its hard for me to see.
Might as well add I have 1 og kush under 600 watt led in flower. And I have 5 stoned immaculate and 2 space cream in veg under 600 and 300 watt leds. The SC was started in flower room and had to turn back after budding in solo cups. Going to invest in ffof for next grow. As for these I had mg natures care and perlite on hand. Yeah I need to finish my room and clean/paint... That's this weekend. Been super busy
Looks like they have some issues with the brown spots, yellowing and leaves curling up. The brown spots and yellowing may be caused by miracle grow (i hate that crap) and/or may just need some cal-mag... and the leaves curling upward is usually indicative of too much heat. I'm not really good at diagnosing problems though so get some other opinions.