These spots started showing up on the leaves of my seedlings a day ago. I can’t tell if it’s a type of nute burn or if it is mildew. My humidity levels were extremely high but I lowered them and sprayed water with hydrogen peroxide and baking soda on the leaves today just in case if it is. Any thoughts?.png)
I’m targeting around 400 ppm for week one and it’s week 2 right now so i’m shooting for 600 ish. I did keep the rockool cubes that the seedlings were in kind of at the surface of the medium on some of the plants which I feel like that could’ve affected it but probably not. I did water ~twice a day until now I guess I’ll do once a day from now on. Will the browning go away on future leaves if the plant becomes healthy again? Also later on when they are older would it be a bad idea to cut off the old brown leaves?