Hey GC im getting ready for putting my baby into the 12-12 cycle for flowering and my question is.... How long would you recommend I should stop feeding her to flush all the nutes out. (incase it makes any difference, I have been using MG all purpose soluble plant food)
1-2 weeks from the end, start flushing. Personally, I don't flush. When the plants grow in nature, they don't suddenly stop getting nutrients the last 2 weeks.
Give it a real flush. Flushing in soil isn't going a long stretch giving regular waterings minus nutes. You want to run 3x the pot volume through the soil in a single sitting, that will cleanse your soil.