Need help in late flowering

Need to know why my top fan leaves turn crispy towards the end of flowering? Using California lightworks SS440 LED, 2 ten gallon pots organic soil mix with perlite, fed GH nutes at half strength in 2x2 closet space under scrog.

Higher Us said:

Need to know why my top fan leaves turn crispy towards the end of flowering? Using California lightworks SS440 LED, 2 ten gallon pots organic soil mix with perlite, fed GH nutes at half strength in 2x2 closet space under scrog.

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Do you water with tap water? When was the last time you flushed the plant to get the salts out.

mike4c4 said:

Do you water with tap water? When was the last time you flushed the plant to get the salts out.

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Regular tap water pH'ed down between 5.9 to 6.2...last time flushed was friday..also took ppm readings from the runoff was pretty high, over 2000ppm but flushed them down to 500ppm. Already figured out why I got the white tips growing, just the burnt crisp fan leaves I'm having a hard time figuring out. Having a hard time flushing two 10gal in a 2x2 space under trays but soon installing a 2x2 tub as soon as I cut this down, which will make flushing a lot easier. What's the best method or equipment for measuring soil PH accurately?

Root rot? I would poke a hole and sniff.

The buds are bleaching like the leave I think. let the soil dry out and hope it doesn't taste like shit.

You could also water with mild nutes and strong H2O2 once then let dry out.

if your using all organics u shouldnt worry bout ph, but seen as thou u have isnt that a bit low? in soil i think its ment to be closer to 6.8 no? imight be wrong im a newby

5.9 - 6.2 ?

LetsGetCritical said:

5.9 - 6.2 ?

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Lesson learned..made switch to 6.7 6.8..should've done this in the past..also going to start a feed water feed water schedule next grow.

They look ready to harvest. I think I see foxtailing.

az2000 said:

They look ready to harvest. I think I see foxtailing.

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Yea they're comin down tomo or two days..been flushing them out since i started this thread and adjusted water to right pH levels..just tryin to get the nutes out because they haven't been flushed out.

If you tested your runoff and its over 2000 then id say with almost 100% certainty that its nutrient burn/lockout from over feeding and having a salt saturated rootzone. Let me ask you this. What do you do with the runoff? Is your plant sitting in it and reabsorbing it? If it is then the solution is to get it off the plant tray with blocks of some kind so the runoff evaporates rather than reabsorbing. 2000ppm is wayy high xoming out of the plant. The bud should still be fine with some more invasive trimming lol. Good luck.

Alienwidow said:

If you tested your runoff and its over 2000 then id say with almost 100% certainty that its nutrient burn/lockout from over feeding and having a salt saturated rootzone. Let me ask you this. What do you do with the runoff? Is your plant sitting in it and reabsorbing it? If it is then the solution is to get it off the plant tray with blocks of some kind so the runoff evaporates rather than reabsorbing. 2000ppm is wayy high xoming out of the plant. The bud should still be fine with some more invasive trimming lol. Good luck.

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To be honest, I didn't think it all the way through and I rushed the plants in on trays and next setup will be in a 2x2 tub..i would have a friend help pick up the 10 gal bucket to switch trays.