Hi
@TheGreenFingers! It seems you're giving too much nutrients, a 2.2 EC for an autoflower is almost like a death penalty. What nutrient schedule are you following? You should have stopped BioGrow a few weeks ago (after the stretch has ended) and your EC should never go above 1.4~1.6, otherwise you have serious risks of nutrients-burn & salt-buildups. Is your EC-meter correctly calibrated? I've been using BioBizz for a while and had great results following this schedule: http://www.420magazine.com/gallery/data/500/Untitled124.png. As you can see, you should be giving 4ml of BioBloom + 4ml of TopMax + 3ml of BioHeaven, and this is the 'nutrient peak week' but the EC should be lower than 1.6. In this scenario I would flush the medium before getting back on track with this nutrient schedule. Now about the harvest, a magnifier will tell you better than us, but you still have a few weeks to go. Hope this will help, keep us up-to-date and happy growing 👊