Hello, looking very good. Try taking a few pics with the light off so the true color shows. Your plants' leaves look real good and no curl or burn around the edges, if your color is ok, less is good as far as nutes. Because you are not adding nutes you don't have salt issues, when the white hairs come out bloom nutes, with little or no nitrogen, should be all you need. Watch your plants, ask questions, have fun, remember pot is a weed and can take some rough love. Good luck.