Leaves light green ! Soil vs hempy grow

Trying to figure out whats going on here.

https://www.rollitup.org/marijuana-plant-problems/609442-very-light-green-leaves-soil.html

Thanks

Hi,

I have same issue. Plans are about 8 weeks old about 40cm and grow in rockwool hydro, controlled PH around 5,5 and EC 800-1100. I just turned them from veggie to flower 12/12.
I'm oxynating water and watering 3 times a day 10 min from top and bottom spray to roots

I've attached some pics, lihgt green one the two on the left

Earlier plants suffered from some nute burn, but should be ok now.

Those things look like they need nitrogen bad.

Danny, yours does look like it needs more N, but check Ph.
Lucky, back off on the nutes, Dude. Your problem appears to be more ph than anything.

Ok, thanks, will try to lower Ec to 600 and keep PH at 5,5. I think no way Nitrogen deficiency bc. been feeding then Bio Nova Pro series with exact recomendation amounts! But list amt. might be too much for this kinda difficult sativa strain.

Never run full manufactures recipe. I would be near 1800 if i did