Adjusting Spa Water Hardness

Keep the spa clean.

Adjusting spa water hardness.

Just like ph and total alkalinity it s important to keep the calcium hardness balanced to prevent your hot tub water from becoming corrosive or scaling. Luckily low calcium hardness can be easily corrected by adding calcium chloride that can be purchased at any swimming pool store. Divide the recommended amount up into three treatments allowing the water to circulate for at least four hours in between. You need to raise the calcium level before your equipment begins to corrode.

How to raise calcium hardness in a hot tub. Clean the spa filter every 4 8 weeks and replace every 1 2 years. To make any adjustments to calcium hardness you will need a test kit or test strips. Drain and refill every 3 4 months.

The benefit of having correct hardness levels is that it prevents corrosion and keeps water clear. A good range for calcium hardness is 150 300 ppm. Also if your water is high in calcium this is where you may want to use water that is treated by a softener to fill your spa. Calcium hardness is the measure of how hard or soft your hot tub water is and measures the amount of dissolved calcium and magnesium.

Fortunately the easiest way to raise calcium hardness in a hot tub is to you guessed it add calcium to the water. Hard water is a common issue for spa and hot tub owners but so is soft water. Simple water analysis can be used to adjust calcium hardness. However before you attempt to balance your hot tub s.

That s all there is to it. Never mix different chemicals together prior to addition to the spa water. Insufficient calcium hardness can sometimes promote equipment corrosion and also result in water foaming problems. Although there s no practical way to reduce high hardness levels it s easy to increase low levels by adding increase calcium.

Make sure your water hardness is not too low. First rinse the vanishing act calcium remover with running water until the water runs clear. Add water as needed to keep the spa full. Pre dissolving granules in a plastic bucket of water is best.

The hardness level of spa water measured as the amount of dissolved calcium is also important. Treating low calcium hardness. Add them one at a time. To use the vanishing act follow these steps.

Did you find the water in your spa is too soft. If the calcium hardness level of your spa water is above 75 parts per million then the vanishing act calcium remover is the ideal tool to bring your calcium hardness level down into the okay range. When calcium hardness is too high. Controlling calcium hardness helps maintain and assure proper water quality in hot tubs.

If you live in one of the purple blue or white areas on the map add a calcium hardness increaser to your spa or hot tub each time you fill with new water. Air out the spa cover twice per week. Allowable parameters lie in the range between 80 200 ppm for hot tubs and spas.