It's very unlikely they will survive but in order to help it turn your flow way down and your return off. Try to allow as many of those spores to settle as possible. Then it's just a waiting game
E. glabrascens is a brooder, it's not super common for them to planulate though. You will probably get a few recruits that settle out in a couple days, you're best off just to leave them be, and try to keep any algae from over growing them.