Ok I am ready. Where do I buy this HW salt?

[mmotown]

I am on my way out of town and when I get to where I am going I wanted to know where to buy this HW salt so I can order it Monday morning. Thx

 

[dippin61]

http://www.drsfostersmith.com/Product/Prod_Display.cfm?pcatid=4874&N=2004+113009

but they are on back order.