I noticed the start of this 2 days ago and its getting worse. From the reading I've done here in searches, and seeing pics I have came to the conclusion this is a Calcium and or Magnesium deficiency. Am I correct? Being T-day I couldn't go the local hydro shop, be going tomorrow. I see GH (the nute line I'm using) makes a Cal/Mag additive. Should that do the trick?
A handful of leaves are showing it now. I did a water change and nute add last night. Using GH FloraNova bloom, Floralicious Plus, FloraBlend, KoolBloom, and AN's Bud Candy. GH Sub culture.
3 weeks and few days into flower
PH is a stable 5.8-5.9
Tent temps are 77*-81* with lights on, RH is around 50%
400 watt hps with cool tube reflector
Growing in a GH waterfarm with air stones on the bottom
Think that is all the relative info to my question. Thanks all!
The worst leaf