Does anyone know what causes this? I flushed this plant 2 days ago.

@Mr. Grow It I tested runoff at the end of the flush. Should have done it in the begining. But at the end it was 6.1 and 670ppm

@Mr. Grow It what kind of deficiency are the leaves showing?

@chriscovey I answered you on your other thread since you posted the same thing on two different threads. Closing this thread since its a duplicate.