I wonder if something like this might work?
- Set your veg formula to the 120-60-120
- Measure EC say 1.2.
- 24 hrs later measure water consumption &
EC. EC comes back 1.0 lower by 0.2 then
Solution is too weak bump it up to EC 1.4 - Check again water consumption is still same
EC still same = equilibrium
I believe you have to practice with this to get a feel for it jmo. Playing with the ratios and dialing Bug method is safe starting point for the new grower. I think these conversations aren’t teaching anything new @LD50 but good for growers new to growing in hydroponics.