Deritus is just like the mud u find next to a pond.
Get some dry it out then put it in a small cloth with holes
in it and put it in the aquarium. Don't just put it because other
wise u won't see the hatchling. Leave the deritus in the tank/ contaner
for around a week. Ur triops will probably rip the bag by biteing it
so chech it every now and then to check if the bag neEds fixing.
Hope this helped