Feuille jaune

Servus Mate, Is it is maybe a bit much if you give her 1l daily. I think your substrate is quite oversaturated. Also the close distance to the light could cause a yellowing of the leaves. Cannabis need to have a wet-/dry cycle. Means you have to give your substrate the time to dry up. Never feed when the top soil is wet. When the first 2-3cm of your topsoil is dry, then you water your Ladies. Good luck and happy trails for the rest of the way🤞! Servus Oim.

I'm a newbie but what I experienced was the same as you and I was told either heat (to close to light) or a deficiency of cal/mag . Wait to here from the people with knowledge but this is a start. I gave a little gal/mag and the lite green gone and no problem since. Good Luck the plants otherwise look nice.....😀😵👌