However, the block salt we stock fits perfectly into either a Kinetico block salt or Harveys block salt water softener, as the dimensions, and properties, are exactly the same.

That said, for the new Harvey Minimax Innova water softener, you can only use the new curved salt (which also fits in the Harvey Arc or Cobalt models).

You will need to top up the salt occasionally; the period will depend upon a number of factors: