Chemical Balance

Chemical Balance Chemical Balance Chemical Balance

Chemical Balance

When testing and adjusting spa water,you have two types of testing methods to choose from:


The Reagent Test Kit:

is a method which provides a high level of accuracy. It is available in either liquid or tablet form.


Test strips:

are a convenient testing method commonly used by spa owners.

TA Scale

Balancing the Total Alkalinity

Total alkalinity (TA) is the measure of the total levels of carbonates, bicarbonates, hydroxides, and other alkaline substances in the water. TA can be considered a “pH buffer”. It is the measure of the ability of the water to resist changes in pH level.

The recommended total alkalinity is 80 – 120 ppm.

If the TA is too low, the pH level will fluctuate widely from high to low. Low TA can be corrected by adding an alkalinity increaser.

If the TA is too high, the pH level will tend to be too high and may be difficult to bring down. High TA can be corrected by adding an alkalinity decreaser.

When the TA is balanced, it normally remains stable, although adding water with high or low alkalinity will raise or lower the TA level.

CH Scale

Balancing the Calcium Hardness

Calcium hardness (CH) is a measure of the total amount of dissolved calcium in the water. Calcium helps control the corrosive nature of the spa’s water and is why soft water is not recommended. The low calcium content of soft water is very corrosive to the equipment and can cause staining of the spa shell.

The recommended calcium hardness is 150 – 200 ppm.

If the CH is too low, add a calcium hardness increaser.

If the CH is too high, dilute the spa water with soft water.

When the CH is balanced, it normally remains stable, although adding soft water or very hard water will raise or lower the CH level.

pH Scale

Balancing the pH

The pH level is the measure of the balance between acidity and alkalinity.

The recommended pH level is 7.2 to 7.6.

If the pH is too low, it can cause corrosion of metal fixtures and the heating element. Low pH can be corrected by adding a pH increaser.

If the pH is too high, it can cause scaling by allowing metals or minerals to form deposits and stain spa surfaces. High pH can be corrected by adding a pH decreaser.

When the CH is balanced, it normally remains stable, although adding soft water or very hard water will raise or lower the CH level.


A Full Spectrum of Water Clarity for Your Cal Spas Hot Tub

Cal Spas is advanced when it comes to industry-leading water filtration and cleaning systems keep your tub immaculate across years of use. Bringing you everything you need, with the preference you want, to keep your spa water crystal clear. Here is a full spectrum of everything you need to know when it comes to deciding which methods to use when it comes to spa maintenance.

Bio-Clean™ Antimicrobial Filter with TeleWeir Gate: A special antibacterial agent within the fabric of each Cal Spas filter helps towards off growth of microbes and bacteria. A TeleWeir Gate prevents debris from re-entering the spa’s water system.

Synergy or Hybrid Clear Water System Pure Clean™: Cal Spas utilize a combination of both Ozone and UV water treatment technologies in order to keep the soothing waters of your tub properly cleansed at all times. Each Cal Spas treatment system combines water filtration with powerful purification technologies to make every soak immaculate.

Effective Water Management System: Filters are designed to be both easily accessible and to allow for balanced filtration. When you choose a Cal Spas tub, the days of fumbling for awkwardly placed filters and navigating complex chemical balances are over. In fact, managing the waters of your tub is almost as stress-free as easing into it.

Cal Pure™ Salt System: Cal Spa’s Cal Pure™ II Salt System is an environmentally friendly sanitation mechanism that instantly transforms salt into bromine, keeping the warm, bubbling waters of your spa clean and pristine around the clock. This perpetual sanitation cycle not only kills bacteria but also algae and other pathogenic organisms that can harm humans. A dedicated digital topside display monitors spa salt levels for proper water salinity.

• Reduced use of costly chemicals
• Automatic bromine generator
• No floaters or feeders
• Odorless, silky water
• No quarterly draining
• No scum lines
• ETL listed

PureSilk™ Ozonator: The Eco-friendly PureSilk Ozonator by Cal Spas features exclusive moisture-sensing technology that instantly eliminates bacteria through exposure to the Ozone while minimizing the use of costly chemicals required by other tub brands.

Tru Blue™ Vacuum Safety Break: Cal Spas engineers place the safety of bathers at the highest priority. Our lifesaving Tru Blue™ Vacuum Safety Break feature prevents entrapment by automatically reducing water flow in the event of an obstruction. It’s a unique safety feature that Cal Spas is proud to standard across our entire spa and tub product line.

Aquatic Power and Strength You Can Rely Upon: While some tubs come only with an on/off switch, Cal Spas offers a dynamic hydrotherapeutic experience in each design. Our tubs’ low-speed settings are ideal for filtration and long, relaxing soaks while our high-speed settings offer comforting, pressurized massage to overworked muscles and joints. Cal Spas hot tubs efficiently increase their luxurious temperatures with state-of-the-art 5.5 kW Titanium heaters that provide years of reliable heating performance.

Eliminator™ Power Frame Pump: This high-performance pump efficiently circulates and filters your spa’s relaxing waters on low speed while delivering unmatched performance and durability on high speed. It’s just one of the ways Cal Spas delivers both relaxing comfort and tough love to whatever ails you.

Quiet Clean™ 100% Filtration System: Available as an optional feature across our entire line of tubs, Quiet Clean™ 100% Filtration System is comprised of a 24-hour circulating pump that constantly and quietly heats the water, so your luxurious home spa is ready to comfort you whenever you need it. The Quiet Clean™ system can help reduce energy costs by minimizing pump operation when your tub isn’t being used.