@DM I swear I tried the meter in soil first, watered a pot and left it there for 5 mins and it barely budged. That's why I stuck in water
@MissS I panicked this afternoon when I saw a couple of plants unable to stand straight. I think I am underestimating their appetite so I will be doing exactly that: moist the soil more than usual.
For Epsom Salts, do you recommend a particular brand ?
Thanks!