Minty

Contrary to what happens with soil or coco, where the media keeps some nutrient and needs some time for the plant to consume it. in DWC, once you change the water, there is no more nutes in the growing media, so there is no need for a long flush, 2 or 3 days is enough. There is no need for calmag on those days.

I think you have another week to go, before that, 3 days or so, use plain water to flush