labifleanswered grow question 6y ago Hey gardener! First off, sartek for your photos, they're beautiful. So you can flush in 2 ways, either you pour a lot of water all at once at the end of flowering to remove the nutrients from the soil, or you water with just water for the last 2 weeks to use up all the nutrients that are left in the soil. If you use the first method, your plant will yellow faster. Good luck, bella ciao!