To be honest I haven’t been monitoring temps this round but I’d be surprised if they are getting below 65f during light out. I’ll get a thermometer/hydrometer in there tonight.Cool temps?
I had to translate that one. But light being too close is a definite possibility. The light I’m using for this round is slightly more powerful. 50 watts of LED sq/ft where I was closer to 40 watts LED sq/ft before. Also this round of flower the light is probably 6” closer to the canopy.lumiere trop proche..?
If it’s lack of drainage I wouldn’t flush- they may be waterlogged if they’re not draining.Some googling suggested a phosphorus deficiency due to lack of drainage. Could cause purpling of leaves. I’m give the soil a good flush with the next watering.
Flushing might still be the wrong idea, but I didn’t want to do it because of lack of drainage. More because of my lack of watering. I frequently let my plants dry out to the point of wilting. Not as a growing technique (though I do think stressing the plant can tell you a good bit about it) but as I get busy and they are down on the priority list. I was thinking a hearty watering might clean them out a bit? Right now I’m watering about 2/3-3/4 gallon every few days.If it’s lack of drainage I wouldn’t flush- they may be waterlogged if they’re not draining.
Maybe try repotting or raising pots slightly off the ground to allow them to drain better?
I’m guessing they’re in soil?