Regarding the first question, the glow indicates they are likely rebranded Philips or another brand which flash on startup. This is normal.
My guess on the second one is that you have excellent tubes. If the reading was wavering back and forth, I'd be concerned but if it's constant I think you're OK.
My guess on the second one is that you have excellent tubes. If the reading was wavering back and forth, I'd be concerned but if it's constant I think you're OK.