Cannabis lower leaves yellowing and dying

Flushed 4 days ago as it may have been a potassium excess which leads to a nutrient lockout. If it won't get better by Friday I'll try adding nutes at half strength. Currently though they still seem to turn yellow.

Your pot looks to be a little on the small side, and when in flower if the lower leaves start turning yellow it's the plant sucking nutrients from them to tell you it needs more. So add some more nutes and see if that helps ✌️🇺🇸🙏

Hey Fam looks to me like she is hungry for some nutrients I’d give her a feeding making sure your Ph is in range see how she reacts and go from there hope this helps good luck 👍

Well, your ppm was way, way, way too high.. goodness! When you say you flushed, what do you mean? The reason I ask is that some people think just giving them plain water once or twice is a flush... it's not... you need to run 3x the pot volume of water through the pot - so if it's a 3 gallon, it needs at least 9 gallons run through her... I would actually, in this case, run as much water through her as you need to - but check the ppm of the runoff... when IT gets to 500 (half what it should be about now), you can quit pouring water in.. Make sure the water is pH'd between 6.0 and 6.5... As for seeing a difference, you're not going to see anything... what you want to look for (and hope for) is that you don't see any ADDITIONAL damage done to the leaves after about 4 or 5 days... it's going to take a while to get those excess nutes out of the plant's system... Once the plant has dried out, you can give more nutes - but don't exceed 1000ppm... and always check the ppm of the runoff as this will tell you what's actually going on in the soil... Good luck!

Tap water is fine, 140ppm. I added a lot of microbes each watering which change my PPM, the slow-release fertilizer also has microbes in it, maybe that plays a role as well in my runoff PPM as well?

Are you sure, check plain water, tap can varry, but still 150-300 mainly. Maybe meter wrong. If i would knew nothing i would say she is hungry, nitrogen, calcium and magnesium hungry. Never tested runoff with slow release, wait for other growers. But once i tried 3500 ppm feed, my best biggest plants were damaged most. Think i reached 2400 few times, but i am a risky man ;)))

I've read that PPM works differently with organic nutrients, my other 2 small plants had 3000ppm for quite some time and while they did have a small overdose it never bothered them that much and the buds developed perfectly. I'm using a slow-release fertilizer so that may play a role as well.

3000 ppm run off ??? your plants would be cooked. Overdose of nutes, especially nitrogen can lead to many deficiencies. Plain water till end, good watering and proper drying out, if there is so many food, just slowly let them consume it. Good ph essential.