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The 2nd pic leaves resemble a PH issue. What’s the input PH/PPMs and run off of these 2 
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I had trouble loading my pics and info so i did it over. Ppm in 993 out 854 other was 940 in 970 out. This was first time ppms came out higher, i know that aint suppose to happen
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I have 4 plants going under my net 2 Gold Leaf and 2 Super Skunk. I been feeding them all the same but the GL is having issues and i think i need to do a different nute feeding than the SS. Was keeping my ph at 6.2 and for the nutes using Jacks 321. My ratios are A-4g E-1.4 B-2.5. Last feed (GL) PH in 6.2 out 6.8=ppm in 940 out 850, this is first time for a increase in ppm usually eats just over 100 ppms. (GL-2) PH in 6.2 out 6.5 ppm in 912 out 854. And my other 2 plants are Super Skunk had issues early but there isnt any now with the current feeding. The eat from 100 to 200 ppms.
Lighting-HLG 600
Soil-Coco coir bricks mixed with 30% perlite
Seeds-Gold Leaf photos,and Super Skunk but there doing good
Nutes-Jacks 321
Temps-79-81 RH 45-58
Co2-No
Water source- Well water thru water softener
From what i understand with using Jacks I can adjust the nutrient level but not sure which one. I did try some cal mag with one this morning but i’m just grabbing at straws .
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Picture 1 and 3 are from the same, and 2nd one is from the other plant that i just noticed this morning. Man my eyes are struggling to see these leaf problems as the plants get bigger. I’m 66 and even with glasses i can’t see shitt.
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Numbers look great, the very lower fan leaves have served their purpose and naturally dying off. Can you post a few overall plants pics? Is the 2nd pic the only leaf that has this??
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This ^^^^
I was thinking my numbers wernt so good because my ph out was high and there not eating very much ppms. The 2nd pic plant has this slight yellowing on lower leaves only, on top looks great. And the other plant has had spots on it for most of its life, i’ll post another pic of it . Thanks for your input. I did a 3 gallon flush on them this morning and lowered the ph down to 6.0, thinking 6.2 was to high. Got ppms down to 718 on plant with upper spots and ph came out as 6.6, and plant with lower yellowing ppm out was 718, ph out was 6.8. I flipped my lights yesterday after around 7 weeks in veg.
If these loaded right first 3 are lower yellowing and last one spots. Thanks again !
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Pics didnt load like i wanted these are all lower yellowing problem. It’s Gold Leaf photo
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My mistake Growmie on the PH, you did the right thing for coco. I was thinking you’re growing in soil
Can someone tell me the rule of thumb testing of ppms coming out from veg to finish ?It’s ok for the ppms to be higher than what’s going in ? I seen somewhere on here someone said go to 2000 then just do ph’d water. I can’t seem to find a good guide line i can follow. When the out is higher than in does that mean it’s stored nutes coming out ? I need to understand this. Any help appreciated much.