On one of my plants, 40 days old. Their are light rings developing on three leaves. The lower leaves. They are really light in color. I think it might be a Ph problem?

any help would be greatly appreciated.
shovlboy Reviewed by shovlboy on . Yellowish Rings? On one of my plants, 40 days old. Their are light rings developing on three leaves. The lower leaves. They are really light in color. I think it might be a Ph problem? any help would be greatly appreciated. Rating: 5