
--should have qualified that request! I need normal light pics please, LED color rendering makes diagnostics difficult.... leaf and damage color are important clues,.... No doubt, that's light/heat stress from the LEDs being much too close, causing the curl...
Oldcoot is right, most recommendations are at that distance, minimum, for bloom-- 5w even more... (Look it up at the makers website).... proximity makes a big difference too, with LED, they need that distance to allow the different diodes/wavelengths to spread out and blend,...
... I don't see symptoms of Ca or Mg defc. so far, but stay on the Ca-Mg, as it's very common to get defc.'s at this time,... Otherwise, pending the normal light shots, I see some N defc., some of which is normal at this stage, in lower fans,... if it's happening fast, you can add some extra grow nutes to the bloom, to boost the N a little more for a few feedings, to help slow down the fan consumption some,... Biobizz is so mild, defc.'s are fairly common using it...