Charcoal, any experience anyone?

I was not sure what topic to put this in, because it could end up on the troubleshooting topic anyways regardless if I do not just choose one, so this is where I put my troubles. For soil, would ground charcoal for a seedling in happy frog soil be bad?

I’ve used biochar before. It made no difference.

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Yeah, I am just on trial number 2 in my studies of the science of growing cannabis in soil and hydroponics, and I did not want to put any fertilizer in the soil that is going to cause nutrient burn or anything.

I’ve found that using biochar when making compost it helps break down organic matter it speeds things up little also