Whaaa...?

Day 59 of flower.

Starting approx. 4-5 days ago, a couple of fan leaves (1/2 way up the plant) started to go a bit yellow with a bit of purplish/brown in the center of the leaves. It happened so quick I didn't notice whether or not it (the yellow) went from tips of leaves-back or backs-to-tips.

Being a bit lazy, I just assumed it was a nitrogen def. since it has been in flowering with nearly no N for a couple of weeks now. (I just checked my soil pH too, right at 6.5-6.6) I think it was 3 days ago I fed with some N added, just as much as I had given it in veg. There hasn't been any changes in light position, weather, temps., etc. as far as I can think of.

Last night I noticed some leaves were becoming a little dry and they were curling every-which-way, more browning, and it looks like necrosis has started at a couple spots on the leaves (mostly at the "base" of fan leaves.) Today, they have done this......

I think you threw off the PH with your ferts you gave it, you appear to have several nute defs the wild leaf twisting also makes me think its Ph
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 FLOWERING nutes to the last gallon of the flush.

Better lighting (less yellow) on the photos would help ALOT. What exactly did you give? Keep in mind....I'm not a soil grower... :(

Stinky's form:

- indoor
- soil
- Fox Farm Ocean Forest
- 6.5-6.6
- 100% R/O water
- I Don't pH test my water
- Day 59 of flower
- Roots Organic HPK 0-5-4 (added a tsp. of max-sea last feeding as well)
- Every watering
- 400w HPS - 2 ft away
- 75-80 @ day / 65-70 @ night
- 33% - 55%
- 12/12
- 4 inch duct on 6 in. fan, passive intake.

how are you arriving at this soil PH reading 6.5-6.6

yea, theres no way that your ph is @ 6.5-6.6
my plants used to look like that & my ph was way down low.....5.3.
now they look great thanx to Ganja.

Quote:

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Originally Posted by Ganja Guerrilla

how are you arriving at this soil PH reading 6.5-6.6

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Rapitest mini pH Tester

10.00$ at the local hardware store. I check the soil an hour or two after I water.

how are you able to determine after the decimal point?
isnt that the color coded tester?

Quote:

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Originally Posted by Suspectelite

how are you able to determine after the decimal point?
isnt that the color coded tester?

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Correct. The color-coded one.

I estimated. The bar landed just a bit higher than right in between 6-7.

did you do the soil ph runoff test like Ganja said?
and the way he said to do it?