Shock & Clarifiers

A hot tub shock will remove dissolved dissolved organic matter from the hot tub water. This is 'stuff' that gets dissolved in the water and can't be removed by your sanitiser or by the filter. For example, perspiration and body oils. It there is a significant amount of dissolved organic matter in the water it will become dull and "lifeless" and will eventually start foaming.

In contrast to a shock product, a water clarifier will help to remove tiny solid particles of contaminants from the water and is often said to make the water sparkle.

A anti-foam will stop the water foaming, but it should only be used as a last resort and if you find it necessary to use an anti-foam on a regular basis is is probably time to change the water!