Jul 27, 2010 #21 Crepe Aquarium Advice Addict Joined May 2, 2010 Messages 2,332 Location Houston, Texas Yep, better yet just replace the carbon in your filter with crushed coral.
Jul 27, 2010 #22 OP OP R rjcatlin Aquarium Advice Regular Joined Aug 13, 2005 Messages 95 Location Lincolnton, NC That won't raise the pH and KH too high by leaving it in there all the time?