Flushing water

No you dont "need to" but if your fans are still green that means she still has alot of excess nitrogen in her which could effect your bud in a bad way but after the bud is dried and cured it will be very hard to tell the difference. personally I wait until I see the bottom fans start to turn yellow and even that is early for me I usually wait until i see the pheno colours come out the purple from lack of phos and obviously the yellowing of leaves showing shes searching everywhere for nuitrients. Even if you have added none there is still nutrition in the soil.

Hi mate, technically there is no need to flush as the cure will breakdown any excess feed and chlorophyll in the bud. A nice long cure with proper burping will give you the best results. Good luck and happy growing

I agree.