Extreme Yellowing and wilting/ bud stage

HELP ME PLEASE! I am growing G-13 and the plants did great all through the veg stage and now that they are developing buds they and doing weird stuff everyday.. i am using the ebb and grow flood/drain system with general hydro nutes.. i have a co2 meter in the room that trys to keep a constant 1400 ppm but it usually stays 800-1200 ppm.. the temp is 73 at the moment and hasnt gotten over 80 in about a month.. all of my fan leaves and turning yellow ( without spotting on browning) so i figured it was Nitrogen dif. my flowering nutes have pretty much no nitrogen in them at all so i figured since i flush everycouple weeks that there is pretty much no trace of N.. some days a few plants randomly wilt but come out of it after i water them. the leaves look great around the buds and the buds seem to be coming great also.. (the buds are getting heavy enough for the plant to start leaning over) there should be about 3 weeks left before harvest and some of the buds on select plants seem to be maturing ( brown hairs) , some of the sugar leaves around some buds are curling up and the tips are dieing.. i thought from what i was reading that the dieing fan leaves were pretty normal but im kindof worried that its excesive and the wilting or drooping scares me too... the buds looook great but from a far the crop is not attractive at all...








please help anyone who can i greatly appreciate this

a picture would really help out........

Use a 1-3-2 NPK. Plants still need nitrogen during flowering. I never understand why people think that plants with super high phosporous and no nitrogen will produce better buds...

GrowingfortheGold said:

Use a 1-3-2 NPK. Plants still need nitrogen during flowering. I never understand why people think that plants with super high phosporous and no nitrogen will produce better buds...

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i give them 1-3-2 already so maybe thats not it... someone told me my plants are too tall for the 2 gal pots ebb and grow comes with.. he said the plats are probably root bound.. anything i can do to help that without transporting to bigger pots?

GrowingfortheGold said:

Use a 1-3-2 NPK. Plants still need nitrogen during flowering. I never understand why people think that plants with super high phosporous and no nitrogen will produce better buds...

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Correct. I use Thrive Alive B-1 red throughout most of the grow. It will give you super lush green foliage and the foliage is thicker and leathery almost. I use it from the start of clones until 2 weeks before flush. Ad 1/2 tsp per quart of your nutrient mix and I can almost guarantee you will see some results. Also works as a great foliar feed. I foliar feed even when flowering has already started taking place. It's not until the buds are a little larger than pea sized that I stop misting in order to eliminate any risk of mold or rot down the line.

p.s. Thrive Alive B-1 red is 1-1-1. Ammoniacal, Nitrate, and Water Soluble Nitrogen, plus lots of beneficial microbial. I think I was told once that part of the secret ingredients in the additive come from kelp off the coast of Canada