Test it, take runoff with a pint of water collected, quart, gal. All readings will be diff from same watering I believe it a matter of delution.
The first thingI noticed is that the issue seems to be located only in a specific area, not all over.
I wondered what was in that area, but not others. Then I looked at the big pic.
Perhaps your humidifier + fan are working together to push that extra wet air right into that part of the plant.
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Great observation @Drinkslinger I turned heater and humidifier my Ppm’s for last runoff were1200-1400, max for medi one is 1400 I also installed bubbler heads to water and at the end it was spitting I possibly had some nute splash thanks again👍
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Hopefully that’s all it is.
If you start seeing leaf issues all over, feel free to ask again.
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Great catch, it looks so similar to my nute burn I got in my photos from hot soil… But that definitely seems to be the ticket since tds is only 1400 (Ps this is a great tds, hold it there if it drops bump it up hold thst till you see flower starting to heavy set then you can bump it a bit a week till you see tip burn or ide assume 1800)
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Thanks all! Anybody using a RO buddie I got a Apera ph20 and ph isn’t very stable what can I add to water so I can adjust ph accordingly. thanks again
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I use an RO buddy. Water comes out around 1-3ppm. Great product for the money.
You don’t need to adjust distilled/RO water. It self adjusts to the current soil pH.
You only need to adjust if you add nutes.
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@Drinkslinger ok thanks, also do you supplement calmag regularly with your buddie?
I use the RO buddy too. When giving water only, you don’t need to adjust it, like @Drinkslinger said. But you will definitely need to supplement cal/mag, probably even more if you’re growing in coco. Coco will sequester some of the calcium preventing your plants from using it.
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Yes. I pay close attention to my plants and supplement as needed.
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Just got one. Same thing here 3-4 ppm.
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@Drinkslinger did some defoliation and some LST and couple girls did the splits, I twist wrapped them together, should of LST sooner 
was going to flip in a few days should I wait till they heal?
I’d give them a couple days. Just so they’re as healthy as possible before flowering.
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Ok thanks
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Gave the girls calmag and nutes yesterday noticed this on the gorilla glue, is this a cal mag deficiency thanks again @Drinkslinger
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Could be calcium def.
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@Drinkslinger @Bulldognuts ph 6.4 and ppms 1100 are good, other 3 strains are good, bulldog did you get the cal mag def.using the ro buddie i never got it with city water and vipars😳 leaves are light green lights at 24” I put 5ml cal mag per gallon every other feeding
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The cal-mag deficiency was on second grow. I was using tap water with proper ph. Everything was fine until I upgraded lights. I would have to look back at current journal but I was using ro water from Walmart and started to get deficiency early on this grow. Started cal-mag 5ml every watering haven’t had a problem since.
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Ok gotcha, how long till they recovered and were you in veg or flower?
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Second grow I was 4 weeks into flower. Had 4 plants nearly lost one. Buds just sort of stopped growing. Got ahead of it on other 3. They did fine. This grow I recognized it early and started cal-mag . I would say within a week there was no more progression. I do know that any leaves that are damaged won’t repair themselves. By the pic you posted it doesn’t look like damage is to bad.
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