SynergyZA wrote: "if you do not feel like fishing 2nd instars out of mommys tank"
That can prove to be quite hazardous
Can't imagine anyone would do that on purpose.
It most definately can be hazardous, but think there are some interesting things waiting to be discovered by watching mommy interacting with spiderlings. Would I recommend it with maculata (Considering this must be the OP's first eggcase attempt)? Most probably not.

Pulling at 2 days may work better in this case.