Thanks for the info ... I do have a sapphire skimmer that goes in the back of the ap24. Should I use this or is there a better way to setup the aquapod? I am thinking about using 30lbs of live sand and about 30lbs of live rock also. I am in no hurry so I am going to add this and let it stabilize for several weeks before I add a CUC. Prolly be three or more months before I even think about my pair of onyx clowns.