hi guys, this is week 4 of my plants... growing in bagged soil (similar to foxfarm, sunshine mix, promix etc). pH has been 6.0 as recommended by my nute manufacturer CANNA. I am using their TERRA range. EC is 1.4 - 1.6 when I feed and I do a weekly flush of 0.5 EC.
I left my plants with my mate to take care of as I'm away for a little while. He sent me a pic and this is what it looks like. Is this from the plants being too close to the light or something else?