Wy Renegade
Aquarium Advice Addict
Now would I still have too empty it completely when a new female is holding or will it be balanced enough from the pwc
Something you'll have to simply test and see - theoretically it should be very close, maybe close enough that no acclimation is needed. I wouldn't transfer without testing some basics like pH however, as even a slight variation might be enough to stress her into spitting or swallowing the eggs.