what is causing the brown spots on this seedling they keep getting bigger
she has a sister who is fed the same bottle of mix and has no heath issues
could it be the soil is P def or ?
Looks like a nut burn to me.
Since you’re in soil I don’t think it has anything to do with the Ph.
Even though the other one is fine you can’t base your decision on that. Some plants can take more then others.
I usually go the first 2 weeks with plain water, the soil should have plenty of nuts. The Bio-grow is very concentrated.