PPM super high and one of the plant seems to be blocked

Why are you worrying over a number that does not apply in soil? Run off EC in soil is just meaningless, all kinds of crap gets washed out of these pots with soil. See this problem a lot with bio-bizz grows the odd leaf markings in particular. Tell you what worked for us, 1.5% H2O2 flush and then re-establish microbiology with something like fish shit or recharge in the following feed. If its not genetic its worth it.

What are the ppms of the water u use? If is not ro/distilled water the best option is to leave it seat in a bucket to eliminate the chlorine. But thats is another story, u can use for the first heavy flush directly tap water. Brings the ppms at around a thousand or less before give her others nuts. Sorry for my english, hope to help u

if your ppm is too high you want to keep giving it whatever water you have that's low ppm... like 1000-1300 is the highest id be with any nutrient watering. And down lower with plain water. Then just keep monitoring it. Molasses can be a good bud bulker btw. Happy growing

Flush with a lot ( like 20/25L 4/5Gallon) of water, so most of the salts will go straight out of the pot, then continue to give her normal watering until the runoff are at the desidered level ✌️🏽