In my ongoing rescue project (https://www.reef2reef.com/threads/roberts-180l-rescue.807270/#post-8648585) I am curious if anyone knows what kind of media this is that came with it:
(Please excuse the plane shavings and sawdust in there, busy refinishing the cabinet first and lacking space to keep things clean)
Or is it just rocks thrown in the sump?
(Please excuse the plane shavings and sawdust in there, busy refinishing the cabinet first and lacking space to keep things clean)
Or is it just rocks thrown in the sump?