Yellow white around and on leaves

Super Soil
Daytime
Temp 84
Hum 65
Nighttime
Temp 72-74
Hum 60
These are Water only no nutes.
But i have 2 out of 8 that I’m throwing nutes in that are doing this as well.
Started seeing some of the bigger fan leaves develop this and I don’t know what it could be.

researched that it could be mag deficiency or iron deficiency. The homie said cal mag.

Just making sure

Not Fe, that would show in the new top growth and it woud be a very yellow, almost white in color. To me it looks like a Mg issue. Either Calmag or epsom salts should fix it up. A light foliar spray of epsom salts should give results pretty quickly.

Classic magnesium deficiency.