4th week of flowering, necrosis of leaves, browning, lime green leaves. Help me?

Ok so I am flowering a Fire OG clone from a clinic in FFOF soil. Been feeding with botanicare bloom solution every other watering. Here is a picture of her looking all healthy and dark green before flowering.003.jpg

So about 2 weeks into flowering I had been noticing these brown spots appearing in the middle of the lower fan leaves, working their way up, and accompanied by of coarse some yellowing and necrosis, eventually fan leaves falling off. I figured there were probably some micronute deficiencies as well as the plant needed a p/k boost so I through some of my friends Fox Farms Open Sesame into the next feeding. The soil was not completely dry but i wanted to feed it asap. After 2 days I noticed no improvement (though for all I know there was no worsening either) so I fed it the other half gallon of nute water already containing open sesame, only this time through in a 1/2 dose of high Nitrogen all purpose plant food. Anyways it seems like things are still getting worse. The buds are still getting bigger though it seems like the could be way further along at this point. Also there is some canoeing of the upper leaves im assuming because of the heat in my space (80-88).

At this point I am starting to realize that while I did notice defficiencies, they were not because of me underfeeding, but because I never gave the pot a proper flushing, perhaps causing an overabundance of salts and nutrient lock? The soil is still pretty damp from a watering 2-3 days ago, should I flush now, later, or not at all??

Any help is much appreciated. This is a last resort for advice as I have done much research and cant seem to solve the problem on my own. :wall:

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Also here is a pic of the skywalker I have vegging that I am sharing with you just because I can :-P.m 009.jpg
 
Whats the run-off pH? You didn't mention pH at all and it is the number #1 thing to look at with toxicity and deficiency.

It 'looks' like a maganese toxicity or iron deficiency but that's just a stab until we find out your medium's pH.

5th week on, yellowing from the bottom up is normal but this is a bit too early.
 
Way too early indeed. This is the first grow I have actually been PHing my water, suprisingly the last 2 went pretty well with the city 8.0 ph water. Anyway the feeding water is 6.5-7 hard to get it to a cue using color samples. My meter reads the soil to be 6.5. Wat can we gain to learn from runoff ph? I have never taken a runoff ph.
 

DrFever

New Member
most people run into this around 4 th 5 th week and many are reverting to give it veg nutes as well as flowering nutes
you need to give it a little bump of nitrogen let it go to next watering then 1/4 strength of veg nutes and 1/2 strength of flowering you should pull lower leafs off there good as dead anyways its all good nice lookin plants other wise
 
That was my initial thought DrFever, however I added veg nutes last 2 waterings and it still seems to be getting worse... Should I flush heavily next watering or continue feeding more nitrogen?
 
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