leaf stems turning red...normal or trouble?

Hi all, here's my data

How long has this problem been going on?
about 2 days
What STRAIN are you growing?
white russian serious seeds
What was the establishing technique? (seed or clone?)
seed
What is the age of your plants?
5th week of bloom (after 4 veg weeks)
How Tall are the plants?
110cm / 43 inches or so
What PHASE (seedling, vegetative or flower) are the plants in?
34 days into flower
What Technique are you using? (SOG, SCROG etc)
natural
What size pots are you using? (Include how many subjects to pot) 11 litres, almost 3 gallon
What substrate/medium are you using?
soil
What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?)
bio soil self produced by growshop with humus guano kalong and 20% perlite
What Nutrient's are you using?
BIO FLORES (BIOCANNA) TOP MAX BIO BIZZ + CANNAZYM every 2 weeks
How much of each with how much water?
4ml /L 5ml/L
How Often?
1/2 times a week (one time nutes, next watering no nutes
What is the TDS/EC/PPM of your nutrients used?
dont know
What is the pH of the "RUN-OFF"?

What method of pH test was administered? Using Strips? pH pen?
ph tester
How often are you watering?
when the pot feels light every 2 days or so
When was your last feeding and how often are you feeding?
yesterday only cannazym, 3 days ago bioflores and topmax
What size bulb are you using?
400w hps
What is the distance to the canopy?
11/15 inches
What is your RH Factor? (Relative Humidity)
49/55% light 60/70% dark
What is the canopy temperature?
now 26° celsius - 79 f
What is the Day/Night Temp? (Include fluctuation range)
light 25°/28° - 77/82,5 dark 20,5°/23° - 68/73 F
What is the current Air Flow? (cfm etc.)
air exctraction, big oscillating fan inside, another fan blows air in from outside
Is the fan blowing directly at plants?
oscillating over the canopy
Is the grow substrate constantly wet or moist?
moist
Is your water HARD or SOFT?
hard but I adjust ph
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water?
TAP
Has plant been recently pruned, cloned or pinched?
one couple of lower branches at 2nd week of bloom
Have any pest chemicals been used? If so what and when?
no
Are plant's infected with pest's?
no








I'd like to know if the leaf stems turning red and leaves turning slightly yellow of this white russian lady maybe normal or not

could it be a reaction of lamp closeliness? (30cm straight under the lamp until yesterday, now I've just moved her on a side, 40cm /15 inches)

It looks a bit like suntan....the stems are turning red only were exposed to light....less evidence in the shaded stems.....
or could also be result of the effort she's putting on flowering....???
her 2 sisters have really dark green leaves

Thanks 4 helping

looks fine too me, should be a very good harvest!

In some strains you see it when uderfed

Your pots should be slightly larger- that could be an indication of soil chemistry starting to fail as the plants become root bound.
Do a runoff pH test too and post the results, and also post the pH of the water you used for the runoff test BEFORE you put it through the pot.

also, with moving to larger pots ask yourself... will I fuck up the plant too much bye acting and should I just chill?

i really hate transplanting

edit: (absolutely beautiful lady btw)

you one of those ppl who sais they have not studied for a test, then gets an A?

IMHO, your plants rock!

i believe that is your plants wanting more p+k. i wouldnt transplant this late in the game. just continue as normal and up the dosage a little on your bloom ferts next scheduled feeding. they wont just die overnight or anything you may be worried about.

stihgnobevoli said:

i believe that is your plants wanting more p+k. i wouldnt transplant this late in the game. just continue as normal and up the dosage a little on your bloom ferts next scheduled feeding. they wont just die overnight or anything you may be worried about.

Click to expand...

im with you stih.......time frame says it all and an ideal time to hit with a booster like canna pk13/14, if the purp stem traits genetic id say it would have shown it a long time before 9 weeks of growth! simular effects can be seen with falling temps in late flower but as the leaf looks a litle pale, id say stihgnobevoli is correct.

reg cmoon

That is purely genetic, you can tell when it is not..... like if you got a nutrient related issue going on. It shows a deep purple that is much darker and happens on all over the plant including the main stalk.

Thanks to all..... I guess all of you are right

stinkyattic,
the ph of my tap water was 8/8.5, corrected to 6.5, first water that came out was 6.....last was 6.5... I guess it should be done with plain water but it was also time to feed so I've done altogether....checked also that nutes didn't altered the ph any further....

I like transplanting but wouldn't do that at this stage, gal's too big, too high risk of damaging.... yes she may be totally rootbound now...so it makes me sense to add an extra bit of nutes like stihgnobevoli and cMoon said...

yeah, I've been told also by my groshop mate that could be a genetic sign ... he also suggested to cancel the 3d from infirmary cause the gal was doing fine....lol... I was already aware of it ...only would like to understand things and what was really going on......

her 2 sisters show very dark green leaves with a slight beginning of red...but she's the biggest and more charged of flowers weight....and effort....and she's beginning to orange some hairs

many thank 4 joining and counseling.....