No it is not ppk yet ,ppk units almost done .
All plants in Promix HP in 5 gallon plastic pots .
I do hand watering right now every 3-4 days
Also i set up ebb and flow 4x4 table with 24 plants/clones with same jacks ,just running little experiment on side
ok, i would just mix it at 5 spoons of each per drum but maybe make the spoons slightly rounded instead of perfectly level.
every third or fourth watering use plain water in the drain to waste.
this helps keep salt build up under control.
good luck!