Discolored Leaves. Cause/Solution?

I was planning on throwing these in flowers next week. The plants look healthy... but some of the leaves are beginning to have yellow/brown spots. Wondering if anyone can determine the cause, and a solution. Thanks in advance!

Do u use reverse osmosis water?

Love1Fear said:

Do u use reverse osmosis water?

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Yup

Do u use a cal mag supplement at 200ppm if not I would not change anything but that and see what you think. Your plants don’t looked stressed all 7 blades and no bad ph traits.

Love1Fear said:

Do u use a cal mag supplement at 200ppm if not I would not change anything but that and see what you think. Your plants don’t looked stressed all 7 blades and no bad ph traits.

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Appreciate the help. I'm a beginner, lot to learn. I do use Cal, 200, every time. Last crop I always went with feed, feed, flush... all the leaves eventually died. This time I'm feeding all the way through, and noticing better results so far... but a friend told me I'd get nutrient burn, so maybe that is the case