hey wohthere i suffered a similar problem with my plants growing bush as ive seen from images on ur thread . ive partially fixed mine but i lost alot of healthy leaf in the process mine suffered from nute blockout as soil ph was to low. so i raised the soil ph to 6.8 then added some nutes. dont know if urs is the same problem cause u said ur ph is 7 but check it out mine looked quite similar images of mine on my thread. as im a bush grower i dont relaly know to much about dro but mayeb check it out. hope this healps