bubblegum autoflower

Hi guys, first time growing currently on the 3rd week flowering and noticed new leaves with brown spots as seen in the photo possibly needs calmag but not sure as found could also be fungus? Appreciate any helpt

Got a question I’m in the process of germinating grapefruit auto and bubblegum auto from gyo seeds, this is my first grow in roots organic which is a coco mix but it’s a premix that has some nutes already in it such as bat guano, fish meal feather meal, etc... will it support the life of the...

So here’s to pictures Is it going to be ok and make it? And it’s been super cold we’re I live, it gets down to 45 degrees f