your in dwc, check your ph, you want to check that every other day as that ph drops a lot in dwc, aim for a 5.6-6.2 but try for a 6. add cal mag as the water needs more, 1tbl spoon per gal, and you can add a all purpose 20-20-20 tbl spoon per gal., check ph and maintain at 6. run the 20 20 20 with cal mag,
keep your bucket clean, probably start looking better in a few days, if you dont have the all purpose, make sure to run cal mag in your mix.
dont buy in to big nutrients for dwc your plants will get huge.,