View Full Version : Cycle a new sump / refugium?

01/16/2007, 07:19 AM
I'm planning to add a sump/refugium to my established 75 gal. In the refugium section I plan on having 4-5" of live sand. Will I have to cycle the sump / refugium like a new tank? If so, I guess I would have to cycle it as a seperate system before connecting it to my display tank, correct?