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Not a lot to say, some are on the bottom of the cup but don't seem morphologically different, so probably not really settled? I sorted out the white balance and the coral is not all too pleased.
9 days post hatch, most of them aren't in the water column, but none really seem to be using a foot to move around or grazing like a snail. The ones I spotted all had algae growing on their shells, making them look fuzzy and more opaque. Here's a video of one unfurling from its shell and starting its velum (now that I've been given terminology for them!)
At 10 days post hatch: not exactly settlement, but I no longer see these guys in suspension in the water. When looked at under the microscope, they still have their velum, and they have what looks like a foot (lower protrusion in the picture), but they're not using it like a snail foot yet.
Took this image under the lower power objective in a dark spot of the field caused by a bit of misalignment in the phase ring/condenser, but which actually looked neat - sort of a combination of the phase contrast dark edges and chromatic aberration with a darkfield illumination look.
Was still interesting either way. Some awesome microscope shots/videos. Thanks for doing this and posting the updates. Best of luck if you get any in the future.Yesterday night, I went to check on things, and I couldn't find any live veligers remaining. Not exactly sure what happened - it could be that the small vessel had a buildup of ammonia or similar and killed the remaining ones, it could be that they were running out of food (still not sure what they should be eating) and they were resting on the bottom in previous days because of it, rather than because they were settling.
Not sure, but too bad that it ended up that way. If I come across more, I won't be QTing them the same way, and instead will just keep them in a larval rearing vessel with a fine mesh, so that I can keep track of their development, but so their water is continuously exchanged with the larger system.
They definitely took longer to settle (again, maybe food related?) than I expected, but I think the chance they were something harmful was probably not high.
Happy to give you another frag with eggs...now that I know where to place the frags.Yesterday night, I went to check on things, and I couldn't find any live veligers remaining. Not exactly sure what happened - it could be that the small vessel had a buildup of ammonia or similar and killed the remaining ones, it could be that they were running out of food (still not sure what they should be eating) and they were resting on the bottom in previous days because of it, rather than because they were settling.
Not sure, but too bad that it ended up that way. If I come across more, I won't be QTing them the same way, and instead will just keep them in a larval rearing vessel with a fine mesh, so that I can keep track of their development, but so their water is continuously exchanged with the larger system.
They definitely took longer to settle (again, maybe food related?) than I expected, but I think the chance they were something harmful was probably not high.
I know with conches at least, the veligers eat phyto - the specific species I’m aware of used for it are Isochrysis galbana and Chaetoceros gracilis. I’d imagine these guys eat something similar.Yesterday night, I went to check on things, and I couldn't find any live veligers remaining. Not exactly sure what happened - it could be that the small vessel had a buildup of ammonia or similar and killed the remaining ones, it could be that they were running out of food (still not sure what they should be eating) and they were resting on the bottom in previous days because of it, rather than because they were settling.
Not sure, but too bad that it ended up that way. If I come across more, I won't be QTing them the same way, and instead will just keep them in a larval rearing vessel with a fine mesh, so that I can keep track of their development, but so their water is continuously exchanged with the larger system.
They definitely took longer to settle (again, maybe food related?) than I expected, but I think the chance they were something harmful was probably not high.
Thanks, I was feeding a blend if isochrysis and tetraselmis - I've got chaetoceros as well, but in the last couple weeks I think both cultures got contaminated, so while they're slowly growing, they're partially off color and I expect I will need to restart from another clean inoculation culture.I know with conches at least, the veligers eat phyto - the specific species I’m aware of used for it are Isochrysis galbana and Chaetoceros gracilis. I’d imagine these guys eat something similar.