Apr 6, 2014 #1 cstar Aquarium Advice Regular Joined Mar 31, 2014 Messages 85 Location Yarmouth Nova Scotia , Canada Will crushed sea shells in my filter raise my KH?
Apr 6, 2014 #2 Brookster123 Aquarium Advice Addict Joined Nov 26, 2013 Messages 19,821 Location Mass Yup!!!!
Apr 6, 2014 #3 caseysd80 Aquarium Advice Regular Joined Jan 30, 2014 Messages 78 Location Caro Michigan Big time!