Maybe a little af them all. the 3rd pic looks a little dry.when you water, water all the soil. this will promote healthy rooting. a little rhizo or clonex wouldnt hurt
yes it will affect the flowers. they suck the life giving saps out of the leaves. your plant will stop growing and eventually die unless you do somthing.
Mg is really hot. its not good for young plants. I would ether try and replant in some soil that doesnt have a bunch of nuts. or... yeah replant and flush
Well first, it helps mold a powder mildew grow starting new probs. and the other is that once a plant has a good root system you want to incourage the plant to take nuts up through the roots, and
How big is she. its not good to foliar feed after they have a strong root system. but watering the roots, of course. go for it, just add and ph the water.