Haha well that's what I get for not knowing about leafminers...
None the less people here love details. More or less so we can see and know about all these different grows
My bad
To be honest I only know a fair bit about pests because I'm addicted to knowing what's what.
Ideally something systemic will work.
SPINOSAD will work on Leafminers.
Neem will work.
You could also remove the effected leaves.
Leafminers are larvae of some pests that tunnel through leaves.
To be honest the damage from them is pretty minimal compared to some other pests you could come into contact with.
Having a good IPM strategy helps too. (Intergrated Pest Management)
J