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NATIVEVAMAN · 03-02-2008, 07:27 PM

A large number of floor and wall tiles are made from common clay,which is acidic in nature.I dont know if fireing clay locks that acidity in but I wouldnt trust it.

03-02-2008, 07:27 PM	#13 (permalink)
NATIVEVAMAN Serpent Star Join Date: Feb 2008 Location: Richmond va Posts: 209 View Gallery Karma Komment	Re: Reef safe? A large number of floor and wall tiles are made from common clay,which is acidic in nature.I dont know if fireing clay locks that acidity in but I wouldnt trust it.