I use General Hydroponic Flora series nutrients as well. when i begin feeding nutrients when the plant is 4-5 inches tall and has 5 nodes of growth I begin with a 1/4 strength dosage. I progressively over several waterings increase the dosage by 1/4 strength at a time until I am feeding full strength nutrients. If I see any signs of yellowing or brown tips on the leaves that is nutrient burn and if it is minor I feed the same strength nutrients the next time I water but do not increase it until the plant has grown more. If the nutrient burn is more severe I flush the pots with at least twice the volume of pH adjusted water as the pot size then feed a smaller dosage of nutrients. I try to give my plants all the nutrients they can use to grow but not excessively, increasing by 1/4 strength at a time usually gives the plants as much as they can use without burning the plants with nutrients. always add your nutrients to water not each other. always shake your nutrients before use. always start with Flora Micro, Flora Bloom and then Flora Gro.
https://www.genhydro.com flora series nutrient calculator
https://www.genhydro.com Flora Series PPM Calculator
https://www.genhydro.com flora series nutrient calculator
https://www.genhydro.com Flora Series PPM Calculator