Well, first of all nutrients dont regulate growth rate, so nothing you can possibly give will make it go faster. Bio root is great, only problem right now is that your plant has no roots for it to bio, lol Basically this stuff is kelp extract which acts as a bacteria-matrix booster at the rhizoponic level (the root level). Start adding it around week three. Right now though, your plant is small and in need of growth hormone. The good news is there is plenty of auxin growth hormone in the bioroots, so what you can do is make a solution with bio roots and water then start spraying your little plant up to six times a day for the first few weeks. Do that and it's a noticeable difference. Hope this helps ! 🚀