I'd love to see somebody, who needs to be brilliant, ........figure that little C^&t out as well. She's an uncooperative bitch. But that smell and taste is so worth it.
manganese will be locked out of the nutrient profile usually dependent on the PH of the system....
higher ph values will render the manganese insoluble and make it unavailable for the plant to uptake.
Probably best to google the best sources of manganese/iron for plants and then adjust your ph to allow
the manganese that's available to be soluble for your plant to use.