Can't identify issue, help please guys, Pic attached

Not sure weather its a deficiency or perhaps something else.
Anyone care to offer an opinion to help me figure out and fix my issue

NFT table , in veg
5.8'.. can get up to 6.2 at time
Canna Veg
EC .08
Temp 65.0f
Excellent air movement (i think,)

Please help

Attached are the pic with i hope help

Could be Calcium or magnesium deficiency. Could be ph fluctuations

Is that on new growth or old growth?

Could be a couple things. Are all those pics off the same plant or are they multiple plants?

Porsche928s2 said:

Attached are the pic with i hope help

Click to expand...

Could be windburn from too much air directly on them. Are the affected leaves those which receive the most air movement?

I see drops of water on some of the leaves. They will act like lenses and burn spots on the leaves. Might be other issues too, so check PH. What nutes in what proportions?

this is a pic of late stage Ca deficiency:

Where on the plant are the spots. Cal def appear on the leaves that have direct light on them usually. Sometimes you can see only half a leaf is effected because the other half is shaded.

Failmore said:

Where on the plant are the spots. Cal def appear on the leaves that have direct light on them usually. Sometimes you can see only half a leaf is effected because the other half is shaded.

Click to expand...

Thats good too know

It appears to be wide spread, pictures are from each girl. I noticed it today when they were resting, difficult to spot once lights come on.
EC is .08 but can drop to .04 at times, less is more from a feed point of view so perhaps it is Ca deficiency.
Ph does climb to 6.1 towards end of the day.
Using Canna A & B veg
I have an oscillating fan on them but its about 1 meter away from the table
Thanks for the input guys. Will try and post additional pictures once there resting again
Happy Thanksgiving btw everyone

Porsche928s2 said:

EC is .08 but can drop to .04

Click to expand...

EC at 0.8 or 0.08? huge difference

Typo error... currently at .6 to .8.
4 weeks in veg.
Suspect it Cal deficiency based on you guys advice and above pic. Have a couple of old leave which resembles it