I have a similar crew from reefcleaners.org, and they seem to gravitate towards my lights during the day but overnight they all head back down to the substrate. Those are nerites, and they don't need to be babysat. When they get out of the water they will close up, but they will survive (except the one that made it to the floor and got stepped on...). I pick them up from outside surfaces throughout the day, and they slways seem to live.
10 Gallon FOWLR (and macro-algae)
20 Gallon Low-tech planted FW
30 Gallon Reef