Originally Posted by Absolem
Caljim is correct.
The reason for the ec is because the coco has been buffered. Without the buffer in coco being filled correctly with Ca. Mg, and K plants will fry.
I had problems with burnt leafs going brow crispy and turning up the ec was ec1.6 when fed with plain water ?
Most grow shops said it was too high of an ec for fresh coco
Bottom leafs were affected first