Water Testing Methods. Cal Spas Portable Spa 60 Pages

Water Testing Methods. Cal Spas Portable Spa
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Calcium Hardness

Abbreviated as CH. Calcium hardness 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 CH level can cause

corrosion

to the equipment and can cause staining of the spa shell. See page 25 for testing for and balancing calcium hardness.

Corrosion

The gradual wearing away of metal spa parts, usually caused by chemical action. Generally, corrosion is caused by low

pH

or by water with levels of

TA

,

CH

,

pH

or sanitizer which are outside the recommended ranges.

Dichlor

Monopersulphate or MPS

Oxidizer

Also called sodium dichlor. It is a type of chlorine and is frequently used when

shocking the water

. An effective

chlorine

-based powdered

oxidizer

and

sanitizer

. Dichlor works by oxidizing waste product in the water such as

bromamines

and

chloramines

and causing them to burn off.

Frequently used when

shocking the water

. An effective non-chlorine-based powdered

oxidizer

that works well with both

chlorine

and

bromine

. It works by oxidizing waste product in the water such as

bromamines

and

chloramines

and causing them to burn off.

Shocking the water

with an oxidizing chemical prevents the buildup of contaminants, maximizes

sanitizer

efficiency, minimizes combined

chlorine

and improves water clarity.

Ozone pH

Ozone is a powerful oxidizing agent which is produced in nature and artificially. Ozone forms no by-products of

chloramines

(ozone actually oxidizes chloramines) and will not alter the water’s

pH

.

The pH level is the measure of the balance between acidity and alkalinity. Low pH causes the water to be too acid, which will cause

corrosion

, whereas high pH causes the water to be too alkaline, which will cause

scaling

. See page 25 for testing for and balancing pH.

ppm

Sanitizer

Scale

The abbreviation of “parts per million”, the standard measurement of chemical concentration in water. Identical to mg/l (milligrams per liter).

Sanitizer is a chemical added to the water to kill bacteria and viruses and keep the water clean.

The two sanitizers we recommend are

chlorine

and

bromine

. See page 26 for discussion of sanitation.

Rough calcium-bearing deposits that can coat spa surfaces, heaters, plumbing lines and clog filters. Generally, scaling is caused by mineral content combined with high

pH

. Additionally, scale forms more readily at higher water temperatures.

Shock

Total Alkalinity

Trichlor

Also called shocking the water, shock treatment, or superchlorination. Shocking the water is adding significant doses of

dichlor

or

MPS

to

oxidize

non-filterable organic waste and to remove

chloramines

and

bromamines.

Shock treatment breaks down organic waste contaminants which cause odor and cloudy water. See page 27 for discussion of shocking the water.

Abbreviated as TA. Total alkalinity is the measure of the total levels of carbonates, bicarbonates, hydroxides, and other alkaline substances in the water. TA is important for

pH

control. If the TA is too low, the

pH

will fluctuate out of control, and if it is too high, the

pH

becomes difficult to stabilize. See page 24 for testing for and balancing total alkalinity.

Used as a pool

sanitizer

. NEVER use trichlor in a spa. Trichlor is extremely acidic and will lower the

pH

, causing corrosion to equipment. Using trichlor will void your warranty.

Water Testing Methods

There are two testing methods to choose from:

Test strips are a convenient testing method commonly used by spa owners.

The reagent test kit is a method which provides a high level of accuracy but is more expensive and more difficult to use.

2018 Portable Spa

LTR20181000, Rev. O

www.calspas.com

23

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