Hi Leah, I've bred Eurycea multiplicata and Eurycea "tynerensis". Some others here have also bred Eurycea bislineata and E. lucifuga. It seems Eurycea don't really require any special effort to breed, just a decent simulation of their natural spring habitat.
My advice would be to buy a medium to large aquarium with floor area being the premium, not actual volume and fill it with about 2-4 inches of water. Then make a seepage of water flowing down a pile of rocks with an internal canister filter or powerhead. Litter the floor with large rocks breaking the surface, especially rocks with existing natural vegetation on them from your collection site.
Hope they breed for you, and feel free to email me if you have any specific questions. I might be able to help out.
