I've decided to try rearing Aplysia (sea hares). Unfortunately, I'm not sure if the red algae spp I have possess the inducers necessary for settlement.I currently have about 4 spp of red macro going, so I hope one will do the trick but you never know. On the good side, the literature says they can be maintained in their larval state for months at a time while I track down the right stuff. But I'm impatient and a 8 day larval period sounds a lot better than 8 weeks. So, if my algae isn't up to snuff, are there any alternative inducers anyone is aware of? I know in some mollusk species, hydrogen peroxide has been used, as has GABA, but I haven't found any info on these in Aplysia. BTW, these are super cool animals! Great grazers and really cute. If you're into that kinda thing.