What is wrong with these plants?

greencity101

New Member
Just put these gals into flower stage. It is now about to enter week 2. I have a hydroponic system growing in Hugos rock wool blocks, HPS lights.
The humidity stays around 50% The temp stays around 75. Although it does drop to the high 50's when lights are off. the plants are about 15-20 inches away from the light.
My former partner sprayed them with an insecticide the first day they were transported. Could this be because of the spray, maybe it was too concentrated? would they still be affected like this after 2 weeks?
or is this a nutrient deficiency? or over fertilization?
I make sure the pH is 5.7 - 5.8 when watering as well as oxygenating the water and i set my 1000 watt lights to 750 to make sure they are not heat stressed or burned. Here are some photos.

Please help! Thank you so much
 

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bobtokes

Well-Known Member
night time temps are a little low try aiming for around 65, you need to vary your ph or you will lock out MG and CA, PH at 6.3 a couple of times aweek
 
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