It likely is nute burn, and watering daily is to much.

MG isn't the best soil, but it has nutes for a few weeks. I also found re-potting a lot, kept most of my nutes up for veg anyway(although I use Fox Farms Ocean). The one time in Veg I added nutes, I to got burned.

Water when the soil is dry, just before the leaves droop. You judge by the weight of the pot(they get pretty lite when dry). Then water until just a tiny bit comes out the bottom. :thumbsup:

Then read, read, read. My theory was, Know before it happened. It worked for the most part too. Yours look good other then the burn by the way. Don't cut or pull the burned leaves either. let them drop naturally, it's less stressful to the plant.