I've run into trouble with Jack Herrer in the...

Looks to be some serious defoliation and nutrient burn. Why so much defoliation? The plants need the leaves to thrive and grow healthy. Excess defoliation causes a number of problems. And you really don't want to remove to many leaves unless you have a super bushy girl and you need some air flow or your in flower and a large fan leaf is just covering a bud sites. Even then I'd do more tucking then such extreme defoliation. When you cut yourself liquid or blood comes out. Your body focus on healing that spot to stop it. Plants are the same way. So if your always removing leaves your plant will not grow properly as it's always putting it's energy into healing. Also you have to be careful when removing leaves as to not damage your future calyx sites. You left only a couple little leaves up top. Your plants have nothing to feed on or use as energy. Leaves provide that for your babies. I'm not trying to be harsh but those plants looked badly abused and nutrient burned.

Da_Magus, I looked at your last grow along with your current grow. You are roasting your plants! The first thing I would say is that if you are growing indoors and not going for organic and using bottled nutrient (no knocking bottles, that is what I use) get rid of the soil and get into something inert like a peat and perlite mix so that you get some better aeration for better wet dry cycles along with the ability to better flush your plants out. Or, go with a hempy bucket set up. takes a little bit to dial in and I use a bit more nutrient than in the past, but I will never go back to anything but 100% perlite in a hempy bucket. Just remember, less is more. Sounds cliche, but It is far easier to fix a deficiency than to chase burning/excessive feeding because it is sometimes near impossible to figure out the cause...especially in soil. I see you said that you flushed with pH'd water...did you measure your runoff EC or TDS? Are you checking your ec or tds when mixing nutrient solutions? Last word of advice, ditch all those bottles and get into something like a simple GH grow, bloom, micro to get your feet wet. Gotta get the basics down and then move on from there. If you are growing one specific strain you can really dial in your nutrients, but if you are like me and probably most of the rest of the growers and you are trying all different seeds from different breeders, then a more general basic type nutrient will serve you much better. Just my .02 from a lot of trial and error. Not ridiculing you, just trying to help you avoid all the issues and $$ that I have gone through figuring this out.

With a marijuana potassium deficiency, you’ll generally see symptoms on older leaves, but not always. Sometimes you’ll see the symptoms at the top of the plant. Leaves with a potassium deficiency get yellow, brown, or burnt edges and tips. The burnt edges may look a little like nutrient burn, except the affected leaves also start turning yellow in the margins. Sometimes a cannabis potassium deficiency (like all deficiencies) can be triggered by stressful conditions (for example overwatering, heat, transplant, etc) and may clear up on its own after the period of stress is over. But in your case heavy defoliation and training caused this. Give her love nothing else from now on keep pH in check and she will recover