Ok so we are in week 3 or 4 of flower. Got yellowing leaves and crsipy tips. I have fed full strength the entire grow and uo to 3 qeeks ago thisbis what i see. All three are witha week of sprout
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What are they growing in? Soil, coco-coir 
When you say “fed full strength the entire grow”.
What are the ppm numbers ofvthe feedings with what nutrients line?
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Are you watering to good runoff? And monitoring in and out ph&ppm?
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Def looks like lockout. I would confirm with a slurry test
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Ocean soil
Ffarm nutes
Ff feeding schl.
Nvr did ppm 5 gln bucket has bout 7.8 cups
980 to 1190 ppm .is whatvthey recommend
Havent Tested. Face palm
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How’d you flush
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I did a slurry test on all 5 plants
I confirmed with the slurry test that my ph was too low at 6.1 . I am in the 5th week of flower and my ph in living soil needs to be 6.5 to 6.8 for optimal nutrient uptake for flower nutes. Over the course of an hour or so, i soaked each plant with water with a ph of 7.5 to 7.7 to get my ph up to around 6.8. I went through about 15 to 20 gallons of water. This is the only time i have ever ran through to runoff in soil is when i have problems. I created this problem for myself though. I didnt realize some nutrients was tanking my water in ph. Im using recycled soil from my last grow that I didnt recharge on purpose to see how long i could get with a plant before i needed to do anything. I forgot that i have no buffer with recycled soil and the rest is in stoner history.
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Flushing is work but its real easy.
All you do is use “Lots” of plain water (bottles or tap)
Ph that water to 6.5 ph, and start pouring it through the pots 1gal at a time.
Pour 1 gal, test the ppm of the runoff water and I bet that first gallon will be extremely high ppm.
Dump that runoff and do it again, pour a gallon through it and test that runoff for ppm.
And keep doing this untill the runoff ppm is under 200ppm.
It can take multiple gallons depending on how much nutrient build up there is, but FF nutrients is pretty common to get lockout.
Think of flushing as basically just washing the medium out, that’s effectively all it is.
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I for got but once you get the ppm in the runoff coming out really low like 200 or less, then give them a half strength feeding.
I’m off to work now but I’ll check back in with ya this evening and we can discuss how to prevent nutrient build up in the future so you want have to flush.
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always feed the FF nutrients with liberal run off. Notoriously heavy in salts and can accumulate driving up the TDS and tanking the PH 
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Thank you very kindly my man!
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Thank you very much!!!
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