Hey everyone this is my first hydro grow. I'm using 4 site drip hydro system with 150w hps light. I'm about 2 weeks into vegging. Everything was going fine until a day or two ago I noticed some of the leaves starting to get brown around the edges and brown splotches. I just checked the PH and that is fine, and the light is far enough away to where I can't feel any heat when placing my hand near the plants. I've read this can be anything from a nitrogen deficiency, to nutrient burn, to overlighting. Does anyone have any suggestions? Thanks!
It might be have something to do with calcium. And with so many possible problems, you should try going one route and trying a specific diagnoses. If that one doesn't work, try the next one. Sorry to be so general, good luck man