do you test the run of in hydroponic grows,nutrients are taken out of the plants,I get a lb per light and i go straight water for 3 week ,its the results that speak,look at greenhouse seeds lab test,and have a talk to them about it when in dam
You may be left with nutrients in the plant but in far lower amounts then when just lowering the dose of nutrients,water for 3 week will help get the nutrients out of the plant because it is only up takeing water,i use mineral water so there will be the minerals that are in the water left in the plants and may be traces in the plant,has for soil then you are more likely to have nutrients left in the soil,unless you look into,something that will help reduce the amount of nutrients left in the soil,there is stuff out there that will help reduce the nutrients left in the soil but for me i go with just good quality water,thats why i buy water for the flush,rather than just tap water,the tap water we have is very good very low ec but,i dont like the idea of chlorine,even though if put in a tub with pump for a few days before use and most of this will evaporate,