Manual Caldera Fantasy Spa 2019 (page 18 of 24) (English)

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ADDING START-UP CHEMICALS

WATER CHEMISTRY

GUIDELINES

Spa water chemistry is ultimately the responsibility

of the spa owner. Improper water chemistry may

result in costly repairs not covered under the spa

warranty. If unsure about any steps in the process

below, please contact your local Dealer.

Initially, it is advisable to identify what minerals

(e.g. iron) are present in the local source water.

This will provide a better understanding of how

to treat the water. Please follow the four steps

below and be sure to achieve the correct levels

in each area before moving onto the next step.

ADD all chemicals into filter compartment while

running jets for 10 minutes.

STEP #1: ESTABLISH PROPER PH

LEVEL:

The recommended range for pH is between

7.2 and 7.8. Above 7.8, the water is too

alkaline and can result in cloudy water, and

scale formation on the shell and heater. To

lower the pH use a pH Down/Decreaser

(sodium bisulfate). Below 7.0 (considered

neutral), the spa water is too acidic and can

damage the heating system. To increase pH,

use a pH Up/Increaser (sodium hydrogen

carbonate). Any pH Up or Down should

be added one teaspoon at a time, waiting

one-half hour between application and

re-measuring.

STEP #2: MEASURE TOTAL

ALKALINITY:

The Total Alkalinity is the amount of

bicarbonates, carbonates, and hydroxides

present in the spa water. Proper total

alkalinity is important for pH control. If the

TA is too high, the pH is difficult to adjust.

If the TA is too low, the pH will be difficult

to hold at the proper level. The ideal range

is between 40-120 parts per million (PPM).

Reduce TA by using an Alkalinity Down/

Decreaser (sodium bisulfate). Increased TA

by adding an Alkalinity Up/Increaser (sodium

bicarbonate or sodium hydrogen carbonate).

These products should be added in small

amounts – 5 ml at a time. After adding 5

ml, wait one half hour before re-measuring.

Once the safe range of total alkalinity is

established, proceed to the next step..

STEP #3: DETERMINE CALCIUM

HARDNESS:

It is important to bring the calcium reading to

between 75-150 PPM. If the reading requires

adjustment, it should now be corrected. If

the water is too soft (a low reading) calcium

hardness should be added to the water to

increase the PPM reading. If the water is too

hard (a high reading), it can be corrected by

either: (A) a mixture of hard and soft water

added to attain a reading in the safe range,

or (B) addition of stain and scale control. If

calcium hardness is a problem with the local

source water (either too hard or too soft) a

test kit, which measures calcium hardness, is

essential.

STEP #4: SANITIZING:

After steps 1-3 are complete, the spa must

be sanitized using Chlorine (sodium

dichlor). Add 2 teaspoons of Chlorine, and

increase as necessary to reach a level of

1-3 ppm. Check and maintain this level

weekly, and before and after using the spa.

IMPORTANT NOTE: A granulated sodium

dichlor is highly recommended for sanitizing

spa water, granular bromine may also be

used. Never use compressed sanitizers

even with a floater. As with any other

chemicals, the sanitizer should be introduced

to the spa with the jets running a minimum of

10 minutes.

WEEKLY SHOCK:

Using a potassium monopersulfate (MPS)

shock, add approximately 60 ml over the

filter while the jets are running. Shocking is

achieved by adding the MPS to turbulent

water. Leave the cover up and jets on high

for 10 minutes. Then shut jets off and return

the cover to the closed position to maintain

heat.

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Caldera Fantasy Spa 2019 Manual

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