ok ill break it down, 2000 watts of hps, co2 burner at 1500ppm, ac room temp 85 degrees, dehumidifier, RO water with ph of 6.3-6.5, promix, blueberryX NL and Legends ultimate indica. Clones taken rooted and put under hps's, veg'd for around 2 weeks while feeding ff grow big 1 teaspoon per gallon every watering (thats what i give my moms and works great) switched to flower and first watering during flowering was 1 and 1/2 teaspoons per gallon of Advanced nutes sensi bloom parts a and b, every other watering. Def showed within 2 weeks of inducing flowering??? Have grown for years and never ran into this problem and went through every possibility of what it could be and can't seem to figure it out...... I'm fuckin stumped and starting to get a little PO'd cause i have lost about 80 plants so far.. o and just added the RO so don't think that is the cause of it?? see all the plants in my pic, ya they ALL DIED well wouldn't say died but all the fan leaves turned yellow and fell off and now bud production is at a snails pace and just took some more cutting but still waiting for them to root. Plus I know that they still need nitrogen during the first stages of flowering but could they show a possible def that quick and if its not a nitro def why didn't i see it in veg