Rusty spots on fan leaves

Growing in soil using floranova bloom.
The plants are in veg, they are clones from a previous plant I harvested. They are about 5 weeks from when I first saw roots n planted them.
They are in 6 inch pots now , I'm giving them 2ml of cal mag plus and 3mls of floranova bloom per gallon. Ph to 6.4 or 6.5 Roughly every 3 days or so {whenever the pot is light}
I'm using a viparspectra 450w led. Has been on 24hrs a day for about 2 weeks or so. I'm getting tiny rust looking spots on the lower fan leaves.

Why are you using the bloom in veg?

I'm using a 2-4-4 bloom straight through this next grow.

The spots look like a micronutrient issue.
Even though you're using calmag I think either of those would be my first guess.
One of the two could be working against the other.
What kind of soil. Do you PH your water?

I've used the bloom all the way though veg and bloom on many previous grows, and yes the water gets ph to 6.4 or 6.5.
I'm assuming they're just being underfed as id rather give too little than too much. I was thinking maybe the lights being on non stop might be driving them too hard thus causing a deficiency since they aren't getting fed heavily. To me, the plants themselves seem a bit too light green. Just figured I'd post it up incase anybody can pinpoint it.

Hi ..Maybe you feeding with flora nova 2-2-4 + 2.5 call mag at the right pH lvl range of 6.5 to 7.5 and that perfect to me. But did you check the pH of your soil? Because If the pH of your soil is at 8.5 the result will be : calcium magnesium phosphore boron iron copper defiency pH to high. happen to me once.

^^^ agreed, lock out

Hi
I recommend not using any flowering boost which you could see in some chart nutrients or seeds chart.They just want the plant going to flower by 4 weeks and you will miss many yields and scrogging and LST options as well.
Looking start burning also loch out