Where can I buy Calgon in powder form?

Does anyone know where I can the above please? I prefer actual soap powder to capsules or liquid but I no longer seem to be able to get the powder form of Calgon.

If you go to Mercadona, they sell the spanish equivalent to Calgon called Polvo. It is with the washing powders in a blue box. You can by both a tablet and powder form and its just as good as Calgon but cheaper in price.

Actually the local stuff is called AntiCal .... 'polvo' just means 'Powder'
It is MUCH cheaper than Calgon, but I cannot vouch for its relative efficacy!

Thank you both