please take a look the problems getting worst!
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Jonus
Well-Known Member
Whats youre feeding cycle, and what are you feeding them?
6 weeks in you will start to experience some yellowing of leaves, but that is usually the lower branches, sometimes the tops will yellow off like that too because the lights may have been too low at one stage? Dunno really.
6 weeks in you will start to experience some yellowing of leaves, but that is usually the lower branches, sometimes the tops will yellow off like that too because the lights may have been too low at one stage? Dunno really.
Yeah the necrotic spots and the lack of uniform yellowing of the bottom leafs seems to rule out yellowing due to nutes being properly used as flowering comes to an end. it looks like they have been properly fed up to this point by looking at the surrounding leaf tips exhibiting there trade mark tip yellowing. I have noticed this from time to time myself, sometimes very randomly on only a few leaves of a few strains and at times only some of one particular strain exhibit the behavior, and was always wondering if it wasnt some gradual buildup leading to slight incompatibility of nutes though Ive never had it affect a plant to an extreme. A better answer could be produced by providing feeding schedule/setup/soil/nutrients/ph run down as its hard to say without further info.
flood and drain ppms 700 ph slitley high now back to 6 nutritional ionic grow bloom at 2 weeks into flowering the third week i have been adding bost into the tank as instructed on the bottle the boost has been added every week upto now flood twice dailey http://www.growthtechnology.com/downloads/IONIC-Schedule-Sept-04.pdf
smokeybandit22
Well-Known Member
6 weeks in, you prob have another 4 to go with this sativa. your problem is easy. you state your ph was high but now back to 6. well that would do it. a high ph-over 6.2-6.5 in your setup would def. lead to nute lockouts. I see a lockout of a couple diff nutes like K, MG and maybe zinc to name a few.
Phosphorus gets locked out of Hydro and Soil less Mediums at ph levels of 6.0-8.5.
Potassium gets locked out of Hydro and Soil less Mediums at ph levels of 4.0-4.5, 6.0-6.5.
Zinc gets locked out of Hydro and Soil less Mediums at ph levels of 5.7-8.5
Being 6 weeks in you should be ok and I would reccomend the following.
drain your res and refill with 1/2 nutes -bloom formula and micro formula. You can pretty much stop the nitrogen feeding after another week or so. I would also add 1-2 tablespoons of epsom salts to correct the mg deficiency. You are going to have to make sure your nutes have all the essentials in them.
lower your ph to 5.7 and maintain it there. seriously. add an air stone to your res if not one already in there.
you should be fine than. they can look like this in your final 2 weeks when you flush, but appearing this way now will inhibit your flowering.
Phosphorus gets locked out of Hydro and Soil less Mediums at ph levels of 6.0-8.5.
Potassium gets locked out of Hydro and Soil less Mediums at ph levels of 4.0-4.5, 6.0-6.5.
Zinc gets locked out of Hydro and Soil less Mediums at ph levels of 5.7-8.5
Being 6 weeks in you should be ok and I would reccomend the following.
drain your res and refill with 1/2 nutes -bloom formula and micro formula. You can pretty much stop the nitrogen feeding after another week or so. I would also add 1-2 tablespoons of epsom salts to correct the mg deficiency. You are going to have to make sure your nutes have all the essentials in them.
lower your ph to 5.7 and maintain it there. seriously. add an air stone to your res if not one already in there.
you should be fine than. they can look like this in your final 2 weeks when you flush, but appearing this way now will inhibit your flowering.