Please could Any help with information with bio biz nutrients

Hi guys

would very much appreciate some information regards nutrients , I’m growing in tropical bat mix and as of yet haven’t given my plants any nutrients it said plant should be fine for the first 2 weeks there 19 days old now from seed and would like to start Giving some nutrients I’ve purchased bio bizz bio grow & bio bloom I give them a litre of water every other day how much should I put in per litre ? Also had a little bit of leaf curling but it was very low humidity I’m managing to stay on top of humidity and temps Many thanks

Start with 2 ml there is a biobizz food chart somewhere on Internet

Just grow

Try water till runoff now and again a litre might not be enough