Organic Tangerines Dutch Passion Contest

Week 3 of flower is over, The buds are shaping up nicely, however she is extremely light and lower leaves are yellowing, she’s definitely struggling. I have ruled out pH, soil and water both are at 6.2, I think she might be suffering from both led light burn and a nitrogen deficiency, those two go hand in hand, once the plant runs out of nitrogen it can’t really tolerate high PPFD and as a result both my lower leaves and top leaves directly in the light are yellowing. I have started feeding organic bottled nutrients and have turned the lights down, hopefully she recovers nicely, bud growth hasn’t really slowed down a lot so I’m very hopeful, sadly she doesn’t smell nearly as much as her clones, which did not run out of nitrogen. This is the last time I’m using bio tabs, it might be user error, but every grow with them I run out of food early in flower. I will continue onward, feeding organic nutrients by plagron, hoping we can still get a decent harvest. I have some fungus gnats and some other small pests, this happens nearly every run now, does anyone know how I could eradicate all fungus gnats? Please let me know. Thanks for checking out week 3, i hope next week this plant will have recovered at least a bit, it's too early for her to start dying.