Issues after first sledgehammer flush, 4 weeks

Y are you flushing a DWC plant. You are taking everything out of the plant. To flush DWC it's really simple. When you change water let it sit in the water for a few hours to and then apply your new nutrients You don't flush a plant completely. Idk what that sledgehammer stuff does or how to use it. But DWC doesn't need straight flushing as it's water. Y would u flush water after you have changed it. You flush to clean soil but you have cleaned it just by emptying it. That's what makes sense to me anyways. Rid of that flush crap and clean your roots or let it sit in a bowl or pot for an hour or 2 and even then you don't need to do it. Good luck.