Runoff High PPm

Hello, for Autoflowers only give half the recommended nutes, usually 400-500 for veg and no more then 800 ppm for flowering, you don't need to feed them everytime you water check the runoff first before giving more nutes and keep the ph around 6.2

Heya! Build up's usually occur from not watering with enough run-off, I had this problem with coco a lot at first. You can water until more run off or what I would do is what you've done, lower ppm and water with more run off. What was your run off ppm? Plants don't look too bad... I usually feed 800-1300ppm during flower. pH should be kept at 5.5-6 for optimal nutrient uptake for soilless grows. Cheers and good luck

Reduce the ppm of the fertigation solution and fertigate more often and also: make sure there's enough drain every fertigation (10-20% the amount of what's going in). There's a great article on cocoforcannabis that explains it all: https://www.cocoforcannabis.com/managerunoffec/ Goodluck!