If you like to have a pool, you might consider as what we call a false bottom, this is especially designed for the dart frog hobby.




Coming to you're question.

Some species do use the pool to breed, others don't.
For example the Epipedobates anthonyi will drop off their tadpoles inside this pool,
but a Ranitomeya or Oophaga will use the axil of bromeliads to drop them off.
There are species of wich the tadpoles can be raised together and there are species that are canabalistic.

That is why you first of all have to descide on what frog you like,
then read and ask about their specific needs.

Starting off with an entire rack..... i just like to say, don't over rush.
It's difficult enough to start off with only 1 species in 1 tank.
You may experience a false start by starting off big, instead of gradually expand as soon as you gained some knowledge.
Might be worth you're consideration