I know what went wrong.... lamps to close with Too high air-temps resulting in heat-stress and burned leafs. Me fallowed the nutrient scheduele by adding PK? She had max nutes at the time, and did not need any PK... i should just have give the big bud like i always do. But i wanted to follow the scheduale as i was affraid mess something up. But by adding pk at the time it was to hot and lights to close with an allready high, but good EC (in normal temps with lights at correct distance) i added PK. What an moron i am. So, she got some burnt upper leafs allready affected by the lights and heat. Then when i spotted problems from adding PK i lowered the EC alot.. from 2.2 - 2.3 to 1.8 (i was thinking at the time i was overfeeding alot) then i left her at 1.8, a couple days later i forgot the tank and she basicly eat up all her leafs. When realised she was not only underwatered, it took me 2 days before i realised she was also underfed. I upped to 2.0, slighty better, but then upped to 2.2-2.3 and there is where she is now..
I could not think or talk about at the time but now it feels better, shes fucked but what can i do, it is what it is. Lesson learned. Keep lights at correct distance with correct temperature = dont grow with HPS in the summer for my part. Dont ever add PK because its bullshit nutrients from now on. And dont forget the tap when using auto-pot. Easy peasy...