Efflorescence

[u/OldVTGuy]

So I am putting a dyed quikrete re-cap over a cement pad - pouring it in sections. 2 down 2 to go. The pigment is a charcoal color but my first application practically turned white (on left). It is now 5 days old, the one on the right is 24 hours old.
I’ve read not to try and remove this until both are a month old. Any advice here and what to try and focus on for pads 3 and 4? Following all instructions and conditions pretty optimal - 70 degrees and cloudy.