Do you have to do a safety stop? No dive computer requires it, and three minutes at 5 m (15 ft) still changes what you surface carrying.

Do you have to do a safety stop? No dive computer requires it, and three minutes at 5 m (15 ft) still changes what you surface carrying.
Why you float at the safety stop: the suit gives its lift back on the way up, and the gas you breathed out is not coming back.