m0useanswered grow question 8 months ago This is copied from the main web page for the product.
HOW TO USE :
Root Booster is very powerful : for best results, use on cuttings, seeds and re-potted plants for 15 days, then switch to Fulvic to stimulate abundant root hair growth.
During rooting and vegetative stages only. Dilute to use as a foliar spray or add to water or nutrient solution :
Solution : 3 to 5 ml/L
Foliar spray : 3 ml/L
https://www.terraaquatica.com/wp-content/uploads/2018/11/Supplement-tableauAppli2022.pdf
This is their feed chart.
https://www.terraaquatica.com/organic-biostimulants-root-development/root-booster/
This is the product page.
So I would only use it for the first 15days like they suggested. even as a seed soak, and maybe on transplant days as well if you plan on transplanting them.
Good Luck!