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potentially heat stress

hi it's a Meanwell HLG-320

Hi, i think I am providing my plants with too much light, seeing some weird symptoms, I have 6 x CXB3590 in a 75 x 75 x 200cm tent, is there any device to reliably measure the light intensity? I have an adjustable dimmer on the power supply, I have measured the power draw from the wall at about...

I think it could be Light Burn - I do have my plants fairly close to the LEDs https://www.growweedeasy.com/cannabis-plant-problems/light-burn

temps 27-28 C growing in soil under COBs

Anyone know what causes this?? Every single grow no matter what strain I thought maybe it was magnesium deficiency so have been adding some canna mono 1ml/L since the start of this grow but doesn’t seem to make any difference These leaves will eventually die but I’m only 6 weeks into flower

4 hours??

the leaf tip curl there in the last pic looks like a mag deficiency to me, is your pH where it needs to be?

for anyone that drys the whole plant, I'm assuming you trim after drying? How is that versus wet trimming?

why would I raise my light up? it's about 12" above the plants and I can control intensity of the light with a dimmer anyway - I have added mag during grow but this is not the problem

I just use the same flowering nutes I always use, AN Sensi Bloom it's weird because the previous Sannie's Jack i ran was such a good plant, huge yield and little issues

I'm sorry but your post didn't make any sense to me

did you back off the nutes when you saw the N toxicity? the subsequent yellowing may have been caused by too much nutrients

I use autopot system so they should be getting correct amount of water, everything seems to be working fine with the system water wise I started off early in the grow with just 1/4 strength nutrients and as I got some yellowing here and there I upped the dose over the weeks to 1/2 strength -...

yes I do

i have been giving them some mag since flowering so it shouldn't be a magnesium deficiency? That plant with the drooping leaves is odd, have never really had that before where the leaves have not recovered, maybe it's a rootzone issue so i won't know until i chop the plant thanks

Sannies Jack F9, had 2 main problems with these 1. Ph was off due to meter drift, ph was low 6s for a few weeks till I discovered it 2. Fungus gnats, which can affect roots? Pretty much under control now They are just about 12 weeks old but buds not really filling out, on half strength AN nutes...

i wouldn't bother trying it again, the flowering time was just too long, I have already put down some Sannie's Jack for my next run as I much preferred it to SSH - i think you would need to grow a good few SSH to get a nice pheno, I'm sure there are better ones than the pheno I got

well the smoke is a bit disappointing - feels like too much body and not really very interesting in the head - i probably let it go too long, don't think I would bother growing this again

finally harvested after 139 days flowering, which is just shy of 20 weeks - got some more trichomes that had a kind of yellow translucent appearance, also much more pistils had receded - hopefully it smokes good!