Hey there TRP, in soil my favorite way is a three week no run off plain water watering , but sometimes I don't have time or whatever . So what you can do is a one week additive flush, using a chelation agent like cannazym (enzymes) or humic and fluvik acid otherwise you can use a flushing agent like cannaflush this also works for the flush and you can flush for 7 - 10 days and it works just fine. Hope this helps ! 🚀