It's a Crown Royal strain from CK
It's in a grow tent with 3 other plants which are doing really well. All get the same amount of feeding on same schedule. This one was the one I've been worried about since day one... runt of the litter if you will
For starts....it don't look like fungus. It honestly looks like nute splash and the leafs that got it are dieing off. I have a picture chart in my signature below that helps with these problems. Also....other growers will jump in and they can help also. Theres some really helpful members here.