Leaves dark stains flowering

looks like underfed, my GUESS bad pH, nutrient lockout occured somewhere down the line Also that's a shit ton of product, i don't want to say it's bad, but you really tapped into the marketing trap there :D but dw watering with normal amount of nutrients and pH corrected water should helpp out

Without a diary it is hard to pin down. Start with checking your PH level. This is a classic sign of high PH, the rust look. If it isn’t right you’re guessing at what is wrong. Bring it between 5.5 and 6.5, wait a couple of days and go from there.

Try backing off on some nutes mate the plants will grow without them just so you know.

those are some really cool product names. i'm surprised there's a problem. looks like a potassium deficiency.