Tried almost everything HELP!!

well it started all but 5 days ago and has been progressing leaf edges and tips are crispy and burnt i flushed all my plants steralized my whole grow space sprayed for bugs and foiler fed with some epsom salt I run a 4 BY 4 BY 7 tent with a 1000 watt hps. i use dutchmans ultra premium coco coir and im using flora nova geow and bloom. i am 3 weeks into bloom. ph is 5.8 and runoff is 5.9 grow room stays 74 to 82 at 45-65 humidity.please any input will help.
 

Gonenowhere

Active Member
well it started all but 5 days ago and has been progressing leaf edges and tips are crispy and burnt i flushed all my plants steralized my whole grow space sprayed for bugs and foiler fed with some epsom salt I run a 4 BY 4 BY 7 tent with a 1000 watt hps. i use dutchmans ultra premium coco coir and im using flora nova geow and bloom. i am 3 weeks into bloom. ph is 5.8 and runoff is 5.9 grow room stays 74 to 82 at 45-65 humidity.please any input will help.

5.8-5.9 PH is a little acidic for soil. Also hows your ventilation? Any Pictures? I guess if your just using coco the ph might be fine but I heard soil PH is supposed to be around 6.5 but just coco is a soiless medium so. Maybe heat? Any signs of little buggers?
 
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