Help please! I am stumped. Leaf problem

[extinctx11]

Started about 5 days ago.
When first started seeing the yellowing figured it was N Def.
So gave it a very very small feeding.

The problem didnt get better, just got worse.
Now am seeing yellowing in the veins, and spots are forming where the yellowing gets the worst. Its starting to look like a PH problem.

Now flushed it 3 days ago, and the runoff was about 6.0 before hand, so its not that far off. tried foliar with MgSO4 (epsom salts) thinking it might be Mg but that didnt help one bit. put Epsom salts (1/2 teaspoon) and some more "FF Grow big" for a total of .6~ EC and 6.6 PH into 1 gallon of water and gave it that, and it still gets worse every day. It almost looks like a Ca problem, and none of the ferts I have include Ca, plus I am using Reverse Osmosis Water, which would have very very little Ca In it, so perhaps I just need to water it with tap water (very very high in Ca here)

The soil is FFOF. there is no perlite in it because I ran out. Perhaps I am seeing the effects of lack of oxygen in the soil? aka overwatering. its been some days since the flush and the pot is getting light but I am afraid to water now.

The strain is PPP. Its under a 250W HPS will be turning on my 400W when this problem goes away.

Pics from the day of the flush:












Pics 3 days later










Note the purple stem? Only some are like that. Might have something to do with this problem. Still think its PH, honestly.

Close up:



In response to the 2 posts below
I have indeed ruled out bugs. I have sticky traps everywhere as well as investigating with a 10X loop every single spot I could find, over and under each leaf, the only bug I have found so far was a single gnat, and I havnt seen one of those in over a month.

The PH comes out of the bottom (run off) at 6.0 nearly perfectly. I figured it was a LOW ph causing these problems, not HIGH, I have been watering with 6.5 up until I saw the runoff @6.0 which is why I started using 6.8 PH water...
Can I foliar feed Cu? if so, what PH is good for foliar feeding?

 

[Blackvelvet]

Copper deficiency maybe. All the micros except molybdenum decrease in availability when ph rises. Try a lower ph of your fert water like 6.

 

[Darkstarlive]

Did you rule out bugs??
Peace...

 

[Guest]

this plant is going to be root-bound.The soil needs some pertilite.

 

[extinctx11]

this plant is going to be root-bound.The soil needs some pertilite.

Would you recommend pulling it out of its dirt, shaking off the dirt, and repotting into a same size pot with perlite 30%? I am getting some today, in an hour in fact... and was thinking the same thing?

Its still getting worse. Now the tips of the leaves are also turning yellow and there are many more purple/brown spots all over, with yellowing of the veins.

 

[Guest]

No do this as gently as possible do not shake out the dirt.Remove gently what is not rooted. Check for the bugs. Red stems can be normal and also can indicate a P shortage.I do not use FF you need their advise. They will have FF experience I do not. I do know few use it strait out of the bag.Ask an organic grower about the FF.

 

[Guest]

Are the leaves with the red stems older than the ones with green stems?

 

[extinctx11]

Are the leaves with the red stems older than the ones with green stems?

Some old leaves have red stems, some dont.
Some new leaves have red stems, some dont.

It appears the red stems happen at random, in varying degrees of darkness, around the entire plant. Perhaps this is because I fed it and nows just beginning to fix itself? I know a fix wont happen overnight, or even over two nights.

ACTUALLY now that I LOOK very close, I note that the only leaves that show this problem are the ones with red stems. The leaves with green stems dont show this problem, and the leaves with very very light red stems show the onset of this problem. That means P Def, Right? Either from lack of P, or PH imba?
My PH is within Phosphorus uptake limits... should I just water with some 0-50-30 AN Bloom Booster? its a dry powder acidic fert (probably mainly for hydro) but I expect it would be very easy and quickly taken up by the plant.

 

[Guest]

the soil needs phosphorus + pertilite assuming the PH is OK. You really need to see what people are adding to the FF.

 

[Guest]

Is the pot stuffed with roots? What colour are the roots?

 

[Guest]

1 teaspoon per gallon or of hi P bat guano bubbled 12 hour or so.Will let you know is it a P problem.It will work fast 48 hours.

 

[Guest]

Last question here. Is this condition scattered all over the plant on the top or bottom?

 

[extinctx11]

Last question here. Is this condition scattered all over the plant on the top or bottom?

Its pretty much from the upper middle down. The very tops where the buds are starting to form seem unaffected, but they are still not quite as green as they should be.

"Is the pot stuffed with roots? What colour are the roots?"

I dont know the color of the roots Ill tell you in a bit. Same goes for the amount of roots. Ill try to get a picture.

I Just picked up some perlite and some DOLOMITE LIME.

Im going to mix a batch of fresh soil for everything. I am thinking 30-50% perlite?

How much Dolomite though? I read 2tsp per gallon of soil. Sound right?

The only thing I have with Bat Guano in it right now is Fox Farm BIG BLOOM. Its an organic fert (0.x-0.x-0.x NPK) that contains worm castings and bat guano... should I push some air through this (bubble it) and then feed it?
You are right about seeing what other people are using in FF soils, I have done tons of research before actually purchasing and using the FF soil, and I have other plants in it that are doing fine, this plant happens to be the largest however, and most likelly this means its the hungriest one as well. Most everyone seems to use "tiger bloom" and "grow big" I happen to have "grow big" which seems to be a decent fert with lots of N and very strong, I have fed this but ALWAYS less than 1/4 the dose recommended. I have never nute burnt a plant yet, because I read how easy it is to overdo the ferts... perhaps ive just been underfeeding all this time? I water with < .5 EC usually. and thats using RO water.

This girl is only 50 days old, with 20 days into 12/12 (showed "buds" at day 8 of 12/12), and its huge.

 

[Guest]

The dolomite sounds rite 30% pertilite sounds a bit much I still do not know about the FF and what it has in which amounts. You could have been under feeding. Most times we know the answer we don't trust ourselves so we need someone else to say it.The ability to trust ourselves is sometimes confused with intuition,precognition or a gut feeling. Be careful what you do now. You've added Epsom salts, neuts(weak ones)Dolimite and phosphorous. I would let things settle down a bit and see what's going on beware of "tinker_itis"The roots? I asked this because if it is root bound re potting is all that's needed. The roots should be light almost white in colour. Brown roots could indicate root rot caused by poor drainage or excess water. The area of plant question is fo determining if this is a immobile or mobile element problem. Bottom to top indicates mobile like N-P-K . The dolomite contains magnesium and calcium. With this being at early flower you need to correct this soon i am pretty sure this is at least a p def.

 

[extinctx11]

thank you