Hello all! New to the thread, seeking help with one of my gals

[Mildmood09]

I have been growing just a few plants outdoors on my porch in 5 gal pots with Fox Farm Ocean Forest soil. They all entered flowering stage roughly two weeks ago or so and one of them isn’t looking too good, the fan leaves are developing brown/black spots all over them and the tip of the leaves are curling upwards. The only nutritiebts I’ve been feeding them is Fox Farm Big Bloom about once a week. This is my first grow and I am very inexperienced, if someone could share some knowledge as to what may be causing this and a way to help it would be greatly appreciated!

 

[StoneOtter]

Hi Mildmood, I'm not the best at this but lets look. The pest problem solver in my sig below shows something that looks like your pic and it looks like calcium deficiency or possible Phosphorus. Check it out and see if you agree. Put a @ before my name and it will call me.