DrJynx86answered grow question 4 years ago Humic and Fulvic can be used at this stage, as they're actually used by soil microscopic life and not the plant. Seedlings can be weak but this one will not do anything on the roots (proven it's well diluted) and you really want to build that soil biomass because that's what helps moving the nutrients to the roots.
Lovely diary, looking forward for more updates!