M MikeM New Reefer Rating - 0% 0 0 0 Dec 17, 2001 #1 Is there any problem using a cinderblock in a large sump?
I Iron Advanced Reefer Rating - 0% 0 0 0 Dec 17, 2001 #2 you need to cure in in fw for a few weeks then probally a few weeks in saltwater. Just like making your own LR. But alot of aquariums use cinder block just cure it first
you need to cure in in fw for a few weeks then probally a few weeks in saltwater. Just like making your own LR. But alot of aquariums use cinder block just cure it first
