I 'spritz' - LOL
first - I just used plain water (not even pH'd)
then switched over to pH balanced, CALiMAGic'd, Armor Si'd water
then - after reading about
Canuck147 'essence', I have switched over to using a liquid seaweed (has all the same things as the 'essence')
the magic is in the phytohormones (auxins, cytokinins and giberellins [spelling???])
the hormones, are all mobile - so, get them on\in the leaves - they go where they need to be (roots, tops, etc)
I spritz multiple times daily, through veg
not hosing them down

I stop spritzing after pistils
the leaves love it, it makes me feel better
I spent a whopping $4 (at a dollar store) on a pressure sprayer - makes a fine mist, only holds 1L of solution
(Mrs Lurking has seen it, and now wants it for her use)