Nov 17, 2013 #21 Rivercats Aquarium Advice Addict Joined Jul 25, 2012 Messages 13,144 Location Missouri I would start out with one and see how much it raises gh/kh/ph and then add the second bag if you want the levels higher.
I would start out with one and see how much it raises gh/kh/ph and then add the second bag if you want the levels higher.