Banana Kush seeds have sprouted to 1/4 - 1/2" in less than 3 days. I submerged them in Ph balanced distilled water for 24 hours, after that I put them in a damp (not wet) paper towel. 2 days later, they had finished their sprouting journey. I pre soaked small rock wool in Ph 5 nutrient solution. Once soaked, I retested the Ph and it was sitting around 6 (hence the reason I went with low Ph pre soak).