Acclimation box release in day or night?

[tzabor10]

Made a DIY acclimation box for a Desjardini Sailfin Tang. Do I release him in the day or night? What are your thoughts? The acclimation box is hideous I know. But for $10

 

[TX_REEF]

I’d release at night, less stressful interactions with existing fish right away

 

[Miami Reef]

Night release is better.