Title says it all. Starts from the bottom and works it way up.
Background ec is 0.8 ph7.2
Eco thrive coco/permits and pebbles at the bottom. 8ltr pots in single trays. Well rooted out.
I use growers ark a/b 1ml litre
Calmag 1ml litre
Extra traces growers ark 4ml litre.
Any advice will be much appreciated