Filter
Top Products
WATER PURIFICATION WITH OZONE (OPTION)
The Caldera Pure Water Ozone system produces ozone
to “burn out” water contaminants, bacteria and viruses
through the process of oxidation. Ozone is continually pro-
duced and distributed to the spa during the
filtration/skim/filter cycles.
Ozone does not replace traditional water sanitizing chem-
icals such as chlorine or bromine. A small amount of chlo-
rine or bromine will be needed in the water in addition to
ozone. Ozone will be doing the major job of killing
microorganisms and oxidizing bather waste such as per-
spiration, body oil, suntan lotion, etc. The chlorine or
bromine will be providing the measurable, lasting residual
and preventing algae from growing.
DO’S AND DON’TS OF SPA WATER MAINTENANCE
DO read labels carefully and follow direction precisely.
Though chemicals protect you and your spa when used
correctly, they may be hazardous in a concentrated form.
DO add all chemicals slowly into the filter compartment
with the Hydro jets operating in high speed.
DO handle all containers with care. Store in a cool, dry, well-
ventilated place.
DO NOT use swimming pool chemicals in your spa.
DO NOT use household bleach (liquid sodium hypochlorine).
DO NOT use swimming pool (muriatic) acid to lower pH.
Many swimming pool water care products can cause dam-
age to spa surfaces and equipment.
DO NOT splash pH “increase” additives on the redwood
cabinet during pH adjustment. Many pH “increase” addi-
tives will cause redwood to turn dark by pulling the tannin
(reddish color in redwood) out of the wood.
DO NOT allow anyone to be in the spa while chemicals
are being added or dissolving.
DO NOT use incorrect products such as Trichlor, which
has a very low pH (2.6), dissolves very slowly, is highly
concentrated and was designed for concrete or plaster
swimming pools. It will cause damage to your spa!
ALKALINITY
0
80
120
180
240
ADD SODIUM
BICARBONATE
TO INCREASE
IDEAL
ADD SODIUM
BISULFATE
TO DECREASE
VERY LOW
ACCEPTABLE
ZONE
HIGH
VERY HIGH
TOO ALKALINE
SCALING ZONE
COMFORT ZONE
TOO ACIDIC
CORROSIVE ZONE
pH LEVEL
ppm
5.0 -
4.0 -
3.0 -
2.0 -
1.0 -
0 -
RECOMMENDED LEVEL
SAFE
DO NOT USE SPA
ADD SANITIZER TO REACH
RECOMMENDED LEVEL
SANITIZER LEVEL
IMPORTANT: Your Caldera spa warranty
excludes surface or component damage caused by
poor water chemistry, the improper use or applica-
tion of chemicals, or the use of non-approved
chemicals, or failure to maintain pH within proper
range. Spa shell, plumbing, electrical system, spa
cover or other spa component failures resulting
from the addition of any alternate water sanita-
tion or purification device, heating system or the
modification of the original equipment are NOT cov-
ered by your Caldera spa warranty.
WATER MAINTENANCE
Page 16
8.4
8.2
7.8
7.6
7.4
7.2
7.0
6.8
ADD pH
DECREASER TO
LOWER pH
IDEAL
ADD pH
INCREASER TO
RAISE pH
DO NOT USE SPA UNTIL TEST KIT
READING IS BELOW 5.0 ppm