ok i am using merical grow potting mix and ever green potting soil in my plants would this be a better mixture? to transplant the plants in to i think my plants have
nitrogen deficiency would this new mix help that any
Composted cow manure will help a little but you definitely need some sort of higher strength fertilizer for vegetation and then another for flowering. Some pics would help so we can see what your working with.
You're better off sticking to the same grow medium throughout the grow. The difference can seriously shock the plants, will certainly detract massively from benefits the different medium may provide.