I have had this in both my first two grows. This is beginning of week 6 flower. Last run off had 700 Ppm and pH of 6.4. Question is rather or not this is calcium or magnesium deficiency. Maybe something else? Pro-mix soil with earthworm castings added.
Let it ride, looks like just leaf fading/dying and seeing tis an auto and at week 6 this is just the normal life cycle of the plant since tis on an internal timeclock. If it were happening at week 2 or were more widespread then i’d have you look into other things but those leaves are dark so I doubt food is what you need.
From here on out I would personally start using PH water only. Let that plant do what its starting to do which is eat up its food stores. Try to get here more lime green/yellow before you chop her down a bit.
Again my opinion though shared by many its just what I would do with autos at week 6 based on my experience with them
It’s not an auto…big bud. I use fox farm but lately only have given it recharge and fish shit plus one feeding of Cha Ching as a stand alone.
Not calcium or a magnesium shortage. How and what are you feeding.
Mostly ph water with fish shit or recharge. I add 3ml a gallon of cal/mag
Very dark leaves usually points to excess nitrogen which can affect calcium and potassium. Not enough info to tell you the cause, but there is something not right nutritional wise. Here’s a good read on how one nutrient will affect the availability of another:
https://www.rxgreentechnologies.com/rxgt_papers/nutrient-antagonism/
Thanks for info, what other info should I share? Today I ran 4 gallons of water through it with just cal/mag. I used 5ml per gallon on first gal and 3ml on the others. Run off got down to 500ppm.Started at 840ppm.
Just go easy on the cal mg. Unless your experiencing deficiencies like inbetween leaf veins turning yellow(magnesium) or small brown spots or patches turning brown on the leaf (calcium). Your plant is in a phase where it will need more potassium and phosphorus til the finish while backing off the nitrogen. You need to figure out a more balanced nutrient feeding schedule.
I think your right, I’m wanting to get into soils that are water and teas only….including recharge but get away from bottle feeds. I need a good soil recipe!