What's great about coco is you can time your flush pretty easily. the nutrients actually get flushed really effectively in coco, so you can flush with plain tap water for 7 days tops to with additives and get the chop done in 3/4 days tops... if you really want to make the plant suffer, then just go longer. Actually it also depends how many times a day you water, the more times the shorter the flush - makes sense? hope this helps ! 🚀