Yup, looks like Cal/mag defi. also need to trans plant asap and use differnt better soil. and then get some fox farm or somthing besides mg. and also make sure temps are not to high. plus put a small fan blowing on them circulating. and then get some kind of ph measuring device. or solution or buy advance sensi grow ph perfect. until then do not attemped to grow. Oh also, get on the net and cram ur brain with any and everything u can about growing and what u growing. but anyways goodluck bud,wish u well.