Yes. If I were you, I would add a .25 to .33 strength dose of nutes yesterday. With inert growing mediums, its wise to start a very gentle feed 3 to 5 days old, depending on how fast it opens up.
in DWC you ned to start nutrients immediately otherwise this happens. So you need three things NPK , CalMag and a chelation agent to break down the nutrients such as beneficial bacteria, enzymes, or humic acid. Hope this helps ! đ