A
ak-51
You could weigh enough to make a concentrated liquid solution and then measure out the liquid. Measuring small volumes of solids is tricky.I have a jug of Ag-Sil 16H - it calls for .7g per gallon. Does anyone have a more convenient measurement? Google suggests that's .147 teaspoons. I have some notes from someone here suggesting 2g/gal to fight powdery mildew.
I use powder nutrients and I find that weighing them isn't that bad at all. I just use some old digi scales.