Yup it really is a life saverA guy on eBay sells a custom cut lid for overflows they are a life saver. Think the guys name is limpsreef
It's always the nicest ones to go in thereNice I just rescued my helfrichi and anemone from the back of my tank after a week.
Did you ever find the wrasseWrasse will be fine they go and hide for weeks sometimes. In fact I haven't seen my leopard wrasse since getting it although at this point not holding out much hope as the other one died the first day.