Sears has Morton System Saver II Salt Pellets on sale for $3.79/40 lb. bag. 99.8% pure, according to the bag.
http://www.sears.com/shc/s/p_10153_12605_04203409000P
I know they dissolve slower, but from what I read the difference is negligible.
http://www.sears.com/shc/s/p_10153_12605_04203409000P
I know they dissolve slower, but from what I read the difference is negligible.