labifleanswered grow question 6y ago Hey gardener! The white widow is already sensitive to sudden changes in dosage and phase, but it can handle a big dose of nutrients during flowering; in any case, it takes in more nutrients than a master kush. You can gradually increase your dosages and see how it reacts, whether it shocks her or not. You did well not to use the big dosage right away since your soil has nutrients in it, so a maximum dosage could have burned your plant. Good luck to you, bella ciao!