Air blowers, which produce tiny air bubbles, and hydrojets, which produce aerated streams of water, must be the correct size for your spa of hot tub. When you are looking at a spa or hot tub and support equipment, you should be sure to find out about water treatment requirements recommended by the manufacturer or dealer. A water quality test kit is a necessity. Because warm water aids in the growth of bacteria and algae, owners should regularly test the water. Spa and hot tub water must have the correct balance of these elements.
Unbalanced water can irritate eyes, corrode the equipment and leave mineral deposits.
Among the chemicals recommended by manufacturers are chlorine, bromine, sodium bicarbonate and sodium bisulfate. Check with your dealer or the manufacturer for specific instructions on the use of chemicals for testing the water. Optional Accessories Optional accessories which will enhance the operation of your spa or hot tub include a variety of items. The most important of these is a skimmer, particularly if your spa or hot tub is located outside or used frequently. The natural residue of body oils and dirt, not to mention leaves and other debris if the spa or tub is located outdoors, can easily overburden the filtering system.