just wait and hope water is evaporated fast( 30 degrees C max at best)
btw its in 70 liter container.
soil is Blumenerde/Geanka Flor. it was good before.
i used Hesi Wurzel Complex( root development until flowering)
i also used Cana Terra Flores 2-4-2 N:P:K when plant was hungry, maybe once a week. Plant is also very rootbound; now i gave it some new soil on bottom ( 5-10 liters) and around the edges. I think there is a multitude of problems; overwatering is first, pH is second, i hope there isnt any root rot. As a result there is a certain nutrient deficiency. i used dolomite lime when mixing soil and also later when i had a similar problem as now. BIgger pot and new soil fixed the problems by itself. I MIGHT TRY 100 LITER POT and some new quality soil
still; i am so fcked if this plant dies on me....