The mercs usually keep a "door" for their dens (I don't recall the males doing this as I think about it) even when not brooding. Give her some small pieces of LR and light weight shells to choose from. They often swap the doors for some reason. If she is comfortable the door will not stay in place much of the time. I suspect closing the doors allows them to sleep some but Sleazy rarely uses hers now.
Unfortunatey, you will not have to house Hindenberg for very long after the babies hatch. Even though Trapper lived an additional 11 weeks, the chances are significantly higher that she will die within a week of the hatching (for mercs hatching appear to last from 3 to 10 days). I raised the young in breeder nets for 5 months in a 45 with decent filtration. You will need to do a lot of water changes in a 10 (probably a 30% daily exchange - just guessing) so my suggestion is nets in the large tank at least until you get them eating larger foods. Fortunately your fish and any meat eating corals you have should enjoy the Cyclop-eeze if you choose to use it.
The large egged animals usualy have a smaller egg count than the small egg sepecies. Trapper only had 6 hatchlings (very low and not normal) where Miss Broody may have had 100 (not sure many escaped the net and I could not determine who was returned and who was new). Oddly, you can only expect 4 - 6 survivors (canabalism does not seem to be an issue). If Hindenberg is joubini, you will likely have one or two days, a week at most, with several hundred young before they all perish. The merc young can be caught on the glass and removed with a turkey baster. Joubini young will not go to the glass or other substrate.
Unfortunatey, you will not have to house Hindenberg for very long after the babies hatch. Even though Trapper lived an additional 11 weeks, the chances are significantly higher that she will die within a week of the hatching (for mercs hatching appear to last from 3 to 10 days). I raised the young in breeder nets for 5 months in a 45 with decent filtration. You will need to do a lot of water changes in a 10 (probably a 30% daily exchange - just guessing) so my suggestion is nets in the large tank at least until you get them eating larger foods. Fortunately your fish and any meat eating corals you have should enjoy the Cyclop-eeze if you choose to use it.
The large egged animals usualy have a smaller egg count than the small egg sepecies. Trapper only had 6 hatchlings (very low and not normal) where Miss Broody may have had 100 (not sure many escaped the net and I could not determine who was returned and who was new). Oddly, you can only expect 4 - 6 survivors (canabalism does not seem to be an issue). If Hindenberg is joubini, you will likely have one or two days, a week at most, with several hundred young before they all perish. The merc young can be caught on the glass and removed with a turkey baster. Joubini young will not go to the glass or other substrate.