Howdy EzPz, I grow with a DWC setup and if I were to use only one feed fro the veg phase, it would be the GH MaxiGrow dry mix. It has a good mix of NKP and is not over priced. If One does not want to use a lot of supplement, I would recommend adding approximately 1/2 tsp/gal of unsulfured molasses to the feeding schedule. Be sure to block out all possible light leaks into the reservoir, keep the water temperature between 62°F and 70°F, and keep the air circulating.
Good luck with Your growing.