Thanks, Les, for responding.
Kim, as soon as I put them in the tank I went ahead and put the aeration on them like I did for the maroons, and then I turned out the lights in hopes that they would hatch soon after, in that they wouldn't have to be under the aeration too long and then risk losing eggs due to fungus overnight because of not enough aeration. Then within 30 minutes I checked on them and they had all hatched.....all but seven. So then I immediately turned down the air and removed the rock and fed them the rotifers. I put the rock with the unhatched eggs in a separate container with aeration to see if they'd hatch out, but they never did. I'm glad now that I did not risk all the others for the seven.
I think in the case with your maroons that did hatch, they had to endure the turbulent air all night, and then the other eggs never hatched out mainly due to not enough flow on them. It's a double-edged sword. I don't think you could have done anything differently. I now have a better feel for just how fragile newly hatched larvae are. So I suppose I did do it differently than the maroons, since the maroons take over a couple of hours to all hatch out, making them have to endure the turbulence longer.
Remember, we did have a survivor after 8 days that made it until it choked on a brine shrimp that I gave it too soon.