Hi I need some advice on a flushing product to use at the end of my grow to get rid of nute's, and leave the end product good and clean for consumption. The guy at the grow shop has recomended something and said I need four days to flush, I find this to be a rather short period of time as it would only equate to two waterings for my plants and that's not a soaking just a normal watering, is this long enough to rid my plants of unwanted "junk". I use General Hydroponics Flor Nova one part bloom, and Big bud in pro mix to grow. This is my first indoor grow so I'm not familiar with "flushing" as Mom nature always did it for me in the past.my grow is going great and I'd hate to not finish it off properly.