Interesting K, Ca, Mg ratio. I tend to push Mg a little to. In the UK we don't rest on the ratio's anyway. The goal is to supply enough of each.
I presume it's the 4-18-38, which I have not seen used very often. Your weights are very precise.
Lookin good bro. I'll be watching this one.
Of course you need to watch this.
Hahaha. Here are the updates:
Thanks swapmeet for teaching me. Nute solution is 300 ppm at 5.8 pH