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prow · 10-05-2007, 08:00 PM

the issue with lava rock is
A. you dont know the make up, heavy metals and other impurities might be in it and lech into the tank. usually very high in silica and other minerals.
B. its very dense, thus not all that much surface area for bacteria to grow. this makes it not very efficient as a biofilter.

10-05-2007, 08:00 PM	#9 (permalink)
prow Tridacna maxima Join Date: May 2005 Location: Redondo Beach, CA Posts: 4,728 View Gallery Karma Komment Add yours!	Re: live lava rock the issue with lava rock is A. you dont know the make up, heavy metals and other impurities might be in it and lech into the tank. usually very high in silica and other minerals. B. its very dense, thus not all that much surface area for bacteria to grow. this makes it not very efficient as a biofilter. __________________ "He who sees things grow from their beginnings shall have the finest view of them" ........Aristotle........ "The only difference between me and a madman is that I'm not mad." - Salvador Dali my chronicle........ http://www.reefsanctuary.com/forums/...al-system.html my clamicle..........http://www.reefsanctuary.com/forums/...my-tank-d.html