Green House feeding is awesome. As organoman mentioned, add as per litre of pot. I know you can add 1-3g/l with the bio line. It really depends on how long you will veg her... I use 15ltr pots and usually give 1-2 scoops, which is about 10-20g. Depending on the type of plant that is and what I have planned for the grow...I include enough to cover the first week or two of flower with biogrow so the plant has plenty of nitrogen going into flowering stage. Good luck using the nutrients, you won't be disappointed...🙏