Seedling leaf disfiguration at tips

I would have to agree with captain shit. To me it looks like your PH is out of range.

FFOF is already amended so you may be throwing it out of whack. I add plenty of oyster shell and or lime when preparing soil from scratch. I think the whole cal-mag craze may be something needed for coco which I have no experience.

Yeah, I think I def over-engineered this. I was given three plants at about 5 weeks old at the beginning of the summer and quickly figured out how to care for them but this is my first grow from start to finish and I'm bringing the mid-life stage nutrient mentality into the beginning-life stage and it's fucking things up.

I think I'll run two more of these in peat pellets and just FFOF to start and see how they do in comparison.

Tap and well water will also add carbonates. If you can water with distilled or RO it wouldn't hurt.

7CardBud said:

Tap and well water will also add carbonates. If you can water with distilled or RO it wouldn't hurt.

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Thanks for the tip 7CardBud. My tap PH is roughly 8 so I've been adding a few drops of lemon to bring it down between 6 and 7. Also been letting the water sit out for 24hrs to remove Fluoride. Will keep an eye on this and try distilled as needed.

jimbonorman said:

Thanks for the tip 7CardBud. My tap PH is roughly 8 so I've been adding a few drops of lemon to bring it down between 6 and 7. Also been letting the water sit out for 24hrs to remove Fluoride. Will keep an eye on this and try distilled as needed.

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Letting water sit won't remove fluoride from the water. It will remove chlorine (but not chloramine). R/O filters are the best way. The amount of Fluoride added to normal city water is not going to hurt cannabis. If you use R/O or distilled water you will need to add calmag as the R/O and distillation process strips almost all the dissolved solids from the water.

Phytoplankton said:

Letting water sit won't remove fluoride from the water. It will remove chlorine (but not chloramine). R/O filters are the best way. The amount of Fluoride added to normal city water is not going to hurt cannabis. If you use R/O or distilled water you will need to add calmag as the R/O and distillation process strips almost all the dissolved solids from the water.

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oh right - sorry that's what I meant...chlorine not fluoride.

I'm also beginning to think this strain is just super slow to start. I have another plant in the tent that is 10 days behind the first. I started it with a peat pellet instead of dropping it straight into the soil and it doesn't have any disfiguration, which lends credence to the idea that the disfiguration was, in fact, nutrient shock...but it's still growing agonizingly slow. Check out the photo - this is day 11 and after doing a quick inspection in the soil, it appears that the roots have not even exceeded the peat pellet perimeter yet (wrapping was removed when transplanted)...so I don't think my over-amended soil is even a factor in the slow growth yet.

Not sure what else could be going on, but I have noticed other Purple Kush CBD Auto grow diaries call out the slow start of this strain compared to others in the same tent. If anyone has any experience with this strain I'd love to hear it and compare notes...

CAPTAIN SHIT said:

Absolutely zero reason to amend Fox Farm with excess lime. It is prebuffered - for weeks.

Viola …..
Addition of excess lime can make soil so alkaline that plants cannot take up nutrients even when these nutrients are present in the soil. The soil may also accumulate excess salts. These conditions stunt plants and cause yellowing of leaves. Often, while leaves turn yellow, the leaf veins remain green.

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Captain Shit yeap the increased discoloration is pointing more and more to nutrient lockout. Dont think there’s much I can do if this soil is juiced up. Might let these keep going for the sake of experimentation…but yeah they ain’t looking too happy.