AaronW
Aquarium Advice FINatic
What are they good for? What is their purpose? What setups benefit from refugiums?
Andrew McFadden said:Mostly they are for saltwater. Bit some use them in freeshwater especially if they fight high nitrates but cant keep plants in the tank because of certain fish or whatever.
But I'm still not clear about what it is. Ha sorry. Do you grown bb in it?