ruwtz
Well-Known Member
Onto second run with Larry OG and I got purple striping of basal stems and purple fan leaf stems all over the place.
Plants absolutely boom in flower and mostly grow out of it, but in veg I get it in every plant every time. It is a very dark red/purple all along the stem and some of the leaf veins too, with the main stem showing purple stripes all the way down.
With less than satisfactory overall leaf health and slightly slower plant growth, I know it must be a problem (I often get some patches of discoloration, crinkling and occasional yellow/brown spotting).
I've read every thread going and think I can cancel out most claims.
>>> Not temps - room is constant 76-78F, low 70's at night;
>>> Not Mg def - I use GH Flora trio + Calmag 3ml/gal every feed (although OG's can be Calmag hogs) + 1/4tsp/gal mg sulfate per week, and no other signs of Mg def such as pale between veins / only affecting older leaves / leaf tips curling up etc)
>>> Not P def - GH Flora trio is well balanced throughout the cycle;
>>> Stable pH and EC strength using RO water
>>> No other environmental stress factor;
>>> Not known to be genetic with this strain.
Setup: growing in 50/50 coco perlite, ebb and flow table fed x3 daily 1.6EC, plants 1 month old, steady RH55%, COB lighting, very healthy and robust roots. Only additives are Hydroguard + Silica Blast + weekly bennie tea.
3 other strains on this table grow fine, with the occasional purple fan leaf stem spotted.
* * *
First run I put it down to stress but this time around they have the good life.
Obviously it is easy to jump on a deficiency here, or a def from lockout. I have tried heavier Mg feeds - up to 5ml/gal Calmag - to no measurable effect.
Perhaps Mg is too high already and locking out P?
Any ideas??
Plants absolutely boom in flower and mostly grow out of it, but in veg I get it in every plant every time. It is a very dark red/purple all along the stem and some of the leaf veins too, with the main stem showing purple stripes all the way down.
With less than satisfactory overall leaf health and slightly slower plant growth, I know it must be a problem (I often get some patches of discoloration, crinkling and occasional yellow/brown spotting).
I've read every thread going and think I can cancel out most claims.
>>> Not temps - room is constant 76-78F, low 70's at night;
>>> Not Mg def - I use GH Flora trio + Calmag 3ml/gal every feed (although OG's can be Calmag hogs) + 1/4tsp/gal mg sulfate per week, and no other signs of Mg def such as pale between veins / only affecting older leaves / leaf tips curling up etc)
>>> Not P def - GH Flora trio is well balanced throughout the cycle;
>>> Stable pH and EC strength using RO water
>>> No other environmental stress factor;
>>> Not known to be genetic with this strain.
Setup: growing in 50/50 coco perlite, ebb and flow table fed x3 daily 1.6EC, plants 1 month old, steady RH55%, COB lighting, very healthy and robust roots. Only additives are Hydroguard + Silica Blast + weekly bennie tea.
3 other strains on this table grow fine, with the occasional purple fan leaf stem spotted.
* * *
First run I put it down to stress but this time around they have the good life.
Obviously it is easy to jump on a deficiency here, or a def from lockout. I have tried heavier Mg feeds - up to 5ml/gal Calmag - to no measurable effect.
Perhaps Mg is too high already and locking out P?
Any ideas??
