Fade spots on leaves

So I have the temp dialed in around 74-75, lights were raised up a few inches, power turned down to 25%, humidity is between 55-60%

Light feed scheduled with canna coco nutes, double check ph and it’s 6.1-6.2

Most are doing ok (except the leaves don’t have nice green look to them).
There are two plants however that have these faded yellow spots on them

I’ve tried googled and reading but unsure what they are or how to treat it. Any help would be appreciated. Not sure if I should cut leaves off or add something to nutes or make any other adjustments

Is Canna like Advanced Nutrients in that you water every day? Looking good, I'd just worry about new growth and more bud sites. Peace

IMO bump up to a medium feed, the plants just look a wee bit hungry overall, and i think the spots are a very slight calcium deficiency probably being caused by such a light feed. They'd probably do better with a little bit warmer temp as well, more like 78-80ish which you can probably do bumping the light up to 40 or 50%?

PopAndSonGrows said:

IMO bump up to a medium feed, the plants just look a wee bit hungry overall, and i think the spots are a very slight calcium deficiency probably being caused by such a light feed. They'd probably do better with a little bit warmer temp as well, more like 78-80ish which you can probably do bumping the light up to 40 or 50%?

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Thank you, I got the exact same advice yesterday from the owner of the hydroponics store I go to, that’s what I’m going to try

Why my girls look yellow and everything should be good l give them city water with a pinch of Epsom salts. Think it frees up the calcium. My guess. 50ppm is good start. You'll know fast if is issue.