My least fav part of growing: Mixing/shaking the gallon jugs

Any soil growers out there have a better way? Maybe ill buy a paint mixer or something. I guess i could get bigger jugs or a barrel but they would be that much harder to mix.

air stone dunk it if you need they sell ones with up to 8 adapters so you can mix individual gallons with different nutrients or strengths

Shaking? I just put some water in first (to help dilute). Then I add the nutrients. Fill the water the rest of the way to the top under a faucet at full blast.