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antoine
01-10-2006, 7:15 AM
I have bio-balls in my sump. I've heard bad things about them. Should I change them and what should I put in there? If so whats the process for changing them without messing the bacteria up?

DansMarineTank
01-10-2006, 7:42 AM
You could turn the sump into a refugium with live rock and macro algae

FloridaBoy
01-10-2006, 11:13 AM
What is your system profile, goals?