Can I use tablet salt in the HarveyArc model?

The curved salt is made specifically for the HarveyArc. The curved salt is lighter (2.15 kg), smaller and easier to handle and much more convenient to store than large tablet bags . The blocks can be stacked for a higher salt capacity – so you can refill less often. Made from high quality salt, the curved block doesn’t contain any nasties so it wont damage your water softener.