Hello,
Thank you. I do not have a refugium as it would be incompatible with my bacterial driven method. I know from experience as the algae quickly died off once the bacteria and carbon dosing had commenced. A fuge is very beneficial and if it works well for you then by all means, continue employing it. I find the bacteria driven system more beneficial as it allows for increased coral grow in the system, providing an endless amount of clean nourishment.
Concerning the KP rocks, they are now in the display but in a previous system had sat int he sump for about two years.
-Sonny