Hello beautiful flowers this grow. I think the key with your flushing and ec monitoring is that it is dropping. You started at 1 and have significantly more color on the plant this week than last and you've gotten down to .3 that shows some serious flushing has happened. I don't think it'll get too much lower, but the buds look healthy and it seems the plant is now sucking excess out of the leaf tissue. I also try for a more organic approach and also to not over feed if i can avoid it...but slowly eliminate and finish with some plain waterings. I'm sorry I don't have my own specifics, but in my opinion you're right where you should be at finishing state. Happy harvesting, thank you for sharing your diary with us. ✌️