odd def, though i suspect..

[pizzadude]

i suspect its a mag def, but not sure. The white spotting is new to me, and i caught it very early, all the photos are of all the leaves with any issue. I have a calmag substitute (Magi-cal) and gave her a half dose yesterday, but can redose anytime. I started feeding her when she entered 12/12 since she had been in the bucket so long on just water, the feed is at 1/2 dose but the LK is almost full dosage. She's only been fed 3 times in the 2 weeks of 12.12

medium- moonshine mix (veg'd in this bucket for 3 months, currently in week 2 of 12/12)
lighting- 430 hps
temps are average
6.6-6.7 ph'd waterings. recently fed with
15ml p/g of pbp bloom for soil
1/5th teaspoon of floralicious plus
12ml p/g of liquid karma
bubbled tap water for a minimum of 24hrs.


any idea? The symptoms are basically on the lower parts and interior of the plant. the interior doesn't get much light, she's a leafy girl.
here's a large exterior fan

interior fans, from the one bad one to medium






and here's a medium sized internal fan, beginning to yellow blotchily...

 

[Guest]

Are you Ph-ing the soil or run off water?

 

[Blackvelvet]

Zinc deficiency

 

[Guest]

Take the soil PH now. The neuts may have messed it.Use distilled water when taking ph of soil. If the ph is wrong correct it This looks to me like an excess of something rather than a lack of. Wait after ph-ing soil before you add other neuts. The actual soil ph matters. Chemical tests are good to verify the electronic metres both analog and digital.

 

[pizzadude]

never checked runoff, but when i water i let between 30-40% runoff, so i figured from the volume it would correct a ph situation.

zinc def? i would think that there's some zinc in the pbp bloom for soil no?

At this point its effecting only 5-8% of the plant, i will check out the soil when i get home. I've never had a def exatly like the spots before, kinda odd really. I think they have some cool ph meters locally.

 

[pizzadude]

i think it is burn of some sorts, the taco'ing on the leafs may just be it!

 

[Ganja Guerrilla]

looks like overfert, definetly PH twisting,most likely caused from the ferts acidic PH

as previously posted complete a soil runoff test, dont feed for a bit

 

[pizzadude]

definately. gonna grab some dist. water today and check it all out tonite.

what qty of water do you suggest for a 4 gallon bucket?

 

[Ganja Guerrilla]

complete a soil runoff PH test.......
with PH corrected water (6.5-6.8PH ) pour enough water in the pots so the water runs out the bottom of the pot ...collect & test the PH of this runoff water....

If the PH reading is out of optimum range 6.5-6.8 PH, you need to flush your plant.
Flush with PH corrected water, till in optimum PH range, 3 times the volume of the pots is the rule of thumb but may require much more flushing if the rootball is thick & sour
EG: 1 gal pot = 3 gal. flush

add 1/2 strength nutes to the last gallon of the flush.

 

[Core]

runoff is't intirely accurate...!!!
distilled water and some soil in a cup...test slurry and you got accurate ph
and optimal range for soil is 6.3- 6.8...... for the record..inbetween that and you are fine...

 

[Ganja Guerrilla]

runoff is't intirely accurate...!!!

I believe it to be far more accurate than a slurry test, your only testing the top soil that way , a compacted root ball will hold acidic Ph even after a flush
and you think your PH corrected , then a couple days later the acidic ph leeches out from the rootball & your still in trouble need to flush again

the top soil you take your slurry test from gets leeched down first, each watering, and no way can indicate the ph of the soil unless your pullin the plant and taking soil samples from the areas of the soil the roots are actually in & using


my 2 cents

 

[Guest]

You take samples from several points in the pot. a straw or small piece of conduit will allow you to take a core sample shove it into dirt and remove dirt from straw.Like a core sample.here I go pi$$ing people off.Run-off is no way to test soil. testing run-off is doing just that, testing run-off. Test the soil.My metres are not as accurate as an old fashioned chemical test.The metres are good to detect changes Up and down.