fertilizer Potting Mix/Fertilizer Help


Please can someone advise on this. Would it be possible grow past the seedling stage if i mixed these 2 together? Also i assumed the vermicompost would look like compost...but its small pellets (never seen pellet form in the many videos on vermicompost), so i have no idea how much to use if i mix them, it says 25 - 50g per m2. I have a few double cups setup with germinated seeds (Reapers), some i am just using the mix, and some i mixed 1/5th of the fertilizer with the mix to see if it worked, none have sprouted yet. Is it possible to use this with a soilless mix or would i need something else and would this kind of fertilizer be fine throughout the stages?

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