Zodiac Nature 2 Express User manual

Owner’s Manual EPA Reg. No. 67712-15
EPA Est. No. 67712-FL-001
EQUIPMENT UNDER PRESSURE
• Always turn spa off prior to installing or changing Nature2Spa.
Your spa system is operated under pressure and the pressure
must be released before you begin work. Please see your spa
owner’s manual for further instructions.
PREVENT CHILD DROWNING
• Do not let anyone, especially small children, sit, step, lean or climb
on any equipment installed as part of your spa’s operational system.
LOW CHLORINE RECIPE
• You must strictly follow the Nature2Spa recipe included in this
manual to maintain proper water chemistry and avoid health
hazards. Failure to follow these instructions can lead to sickness
from bacteria and other noxious organisms.
ATTENTION
Failure to heed the following can result in
permanent injury or drowning.
!
PRECAUTIONARY STATEMENT
HAZARDS TO HUMANS AND ANIMALS
CAUTION:
In the unlikely event that a cartridge breaks, mineral media should not
be ingested by humans or animals as it may cause gastric distress.
FIRST AID IF INGESTED: Call poison control center or doctor
immediately for treatment advice.
CAUTION
!
IMPORTANT: Spa Owner, save this manual.
Installer, leave this manual with the spa owner.
The Nature2Spa is designed only for residential portable spas.
Safety Instructions
Important Information
Nature2Spa has been designed to sanitize spas up to 500 gallons.
Please read prior to installation.

2
Thank you for purchasing Nature2Spa. Please take a few
moments to review the material in this manual. We believe
the more you know, the more enjoyable your bathing
experience will be and the more you will reduce the time,
effort and cost of maintaining your spa. While every spa has
its own characteristics of water type, amount of sunlight, etc.
the recipe included in this manual will help ensure good
water quality in any spa. If you have questions, your Nature2
Spa dealer can provide professional advice and service.
Directions for Use
It is a violation of Federal law to use this product in a manner
inconsistent with its labeling.
Nature2Spa Compatibility
Attention: Not to be used with product containing bromine,
sodium bromide, or biguanides. If these products are being
used, be sure to drain and refill the spa with fresh water..
Contents Page
Safety Instructions ................................................................1
Start-Up ................................................................................3
Balance the Water ................................................................3
Install the Nature2Spa ........................................................4
Recipe ..................................................................................6
Provide Filtration/Circulation ................................................8
Nature2Spa Replacement Intervals ....................................8
Disposal ................................................................................8
Limited Warranty ..................................................................9
Troubleshooting ..................................................................10
Nature2Spa Test Strips ......................................................12

3
Start-Up
Before using a new Nature2Spa, clean debris and algae out
of the spa and spa equipment.
Important: Do not install the new Nature2Spa until the __
spa water is clean and chemically balanced.___________
Balance spa water before installing Nature2Spa.
• pH 7.2-7.6
• Calcium Hardness 200-400 ppm
• Total Alkalinity 80-120 ppm
• Total Dissolved Solids (TDS) 300-2000 ppm
Consult your Nature2dealer for water balance instructions.
Balance the Water
To find out if your spa water is balanced:
• take a water sample to your dealer to be tested, or
• ask your dealer to recommend a spa test kit for
water balance.
Element: pH Range: 7.2-7.6
If too low: The surface of your spa can become etched.
Metal parts in the pump and plumbing will corrode.
How to fix: Add pH increaser.
If too high: “Scale” forms on the surface of your spa. The water
can become cloudy. Equipment can be damaged.
How to fix: Add pH decreaser.
Element: Calcium Hardness Range: 200-400 ppm
If too high: Rough, discolored deposits (“scale”) will form on the
spa surface and inside spa equipment.
How to fix: Drain or dilute the spa water. Consult your dealer.
Element: Total Alkalinity Range: 80-120 ppm
If too low: It provides no buffer so that you constantly get
fluctuating pH readings, which can damage
equipment and spa surfaces.
How to fix: Use an alkalinity increaser.
If too high: The water becomes cloudy or milky white.
How to fix: Add acid to bring alkalinity down.

4
Install the Nature2Spa
The Nature2Spa is designed to fit most portable spas.
Zodiac assumes no liabilities for the product if installed in
any way other than the methods described in this manual.
1 Drain and refill your spa. Balance the water per spa
manufacturer guidelines.
2 Install the Nature2Spa after water is balanced. Refer to
Assembly and Installation Diagrams below for instructions
regarding your particular model’s installation.
3 Superoxidize the spa water with an EPA registered source
of chlorine according to manufacturer's instructions to
burn off contaminants and activate cartridge. Important:
Initial superoxidation with dichlor1is required to burn
off contaminants and activate cartridge.
• Add 1.5 tablespoons of dichlor to spa per 250 gallons
(approx. 1000 liters). Note: 1.5 tablespoons is
approximately 3/4 oz or 24 grams.
• Do not enter the spa if the free available chlorine
residual is over 5 ppm.
4 Run spa according to recommendations supplied to you
by the manufacturer of your spa.
Assembly and Installation Diagrams
The Nature2Spa comes in three parts; the main body (A)
and two support stems (B, and C).
1 Connect the support stems together and press onto main
body to create a single device as shown.
1Sodium dichloroisocyanurate dihydrate
AB
C
A
B
C

2. Slide the entire device into the core of your existing spa
filter cartridge. See examples below.
Open Top: Slide unit in from the top. Position near the top
half of the cartridge. (Support stems may be cut to
position the cartridge correctly.)
Open Top with Stand Pipe: Some spa filter systems are
configured with a standpipe running the length of the filter
core. Simply slide unit in from the top. Position near the
top half of the cartridge for easy retrieval.
Closed Top: Slide unit in from the bottom. Position unit to
rest on shelf inside filter core.
5
Closed
Top
Open Top
with Stand Pipe
Open Top
correct
Open Top
wrong
When installed, the Nature2Spa must be at least 1" (2.5 cm)
above the bottom of the filter to prevent blocking water flow.

6
When: What to do:
Every day Run spa according to recommendations supplied to you by
the manufacturer of your spa.
Before Test the water with Nature2Spa Test Strip (or equivalent).
each use If the MPS2level is low, add 1 tablespoon of MPS2to spa
per 250 gallons (approx. 1000 liters). Note: 1 tablespoon
is approximately 1/2 ounce or 16 grams
Use the Nature2Spa Test Strip (or equivalent) to test the
spa water after each addition of MPS2.
If the test strip indicates levels below the OK range, add
1 tablespoon MPS2to spa per 250 gallons and re-test.
Enter spa only after test strip indicates a sufficient level
of MPS2.
After Add 1 tablespoon of MPS2to spa per 250 gallons
each use (approx. 1000 liters).
Once Adjust the pH, total alkalinity, and hardness as needed.
per week A convenient way to test pH and total alkalinity is the
Nature2Spa Test Strip.
Every 4 Drain and refill your spa. Replace Nature2Spa and
months repeat sanitizer start-up.
Operation and Maintenace
There is one recipe for maintaining clean, clear, sanitized water
with minimum time and effort. This recipe provides the easiest
and most economical way to care for your Nature2Spa.
Low-Chlorine Recipe
Ingredients:
• Nature2Spa
• Non-chlorine oxidizer (MPS2)3
• Nature2Spa Test Strips4, or equivalent
(MPS2, pH, and total alkalinity)
• pH, hardness and total alkalinity adjusting chemicals
• Dichlor1, EPA registered source

When: What to do:
As needed Shock treat with 1.5 tablespoons of an EPA registered
source of dichlor1per 250 gallons (approx. 1000 liters) to
remedy problems which may occur when bathing loads are
high, when successive MPS2test strip reading indicate
high demand, when water appears hazy or dull, when
unpleasant odors or eye irritation occur, after heavy wind
and rainstorms or if foam develops.
7
1Sodium dichloroisocyanurate dihydrate
2Potassium peroxymonosulfate
3MPS may cause a lowering of the pH and total alkalinity of your spa water.
Please monitor pH and total alkalinity at least once per week and adjust accordingly.
4Nature2Spa Test Strips are available at your local Zodiac Nature2Dealer.
Note: As an alternative to MPS2, an EPA registered source of
dichlor1may be substituted: 1 tablespoon dichlor1=
approximately 3 tablespoons MPS2.
Important: Perform start-up procedures for spas which
have been unused or unattended.The Nature2Spa is not
to be used with products containing bromine, sodium
bromide or biguanides. If these products are being used,
DRAIN AND REFILL SPA WITH FRESH WATER.
Provide Filtration / Circulation
To manage: You need to:
Circulation Follow the manufacturer’s directions for
keeping the circulating pump in good working
order and operate it at least four hours a day.
Consult your Nature2Spa dealer for optimum
run times.
Filtration Check the spa filter periodically and clean it
as recommended by the manufacturer.

8
Nature2Spa Replacement Intervals
Use the month indicator decal to identify the date on which
the cartridge should be replaced.
Always turn spa off prior to installing or changing Nature2
Spa. Your spa is operated under pressure and the pressure
must be released before you begin work. Please see your
spa owner’s manual for further instructions.
A cartridge lasts four (4) months. The cartridge should not be
used longer than four (4) months.
Nature2Disposal
After four months of use, discard Nature2Spa in household
trash. Do not save the cartridge for re-use. The cartridge is
manufactured with the mineral media sealed inside. In the
unlikely event a cartridge breaks, remove it and vacuum out
any media introduced into the spa.

9
Nature2Spa Limited Warranty
The limited warranties contained within this document are the only
warranties given with your Nature2Spa and supercede any prior
warranties. All other warranties, expressed or implied, including
the implied warranty of merchantability or the implied warranty
of fitness for a particular purpose are hereby disclaimed. Our
sole obligation under this warranty, and the purchaser’s sole remedy,
is limited to repair or replacement of the Nature2Spa. The Nature2
warranty applies to the original owner only.
THE LIMITED WARRANTIES OF THE NATURE2SPA ARE:
Nature2Spa is warranted to be free of defects in materials and to
perform satisfactorily for a period of four months from the date of
purchase. Nature2Spa is warranted not to cause staining in your spa.
This limited warranty requires that you exercise reasonable care of
your spa and keep water in balance at all times. This limited warranty
does not cover discoloration to chromium fittings. This warranty does
not cover cartridges used with any biguanide products such as
BaquaSpa5, Baquacil®5, SoftSwim®6or any products containing
Bromine or bromine-based chemicals. If the cartridge is defective and
does not perform satisfactorily for the entire four months, we will
replace the cartridge.
EXCLUSIONS FROM WARRANTY
Nature2Spa is designed for use on residential portable spas up to
500 gallons. If it is used in any other application, the warranty is void,
and the purchaser and/or spa owner releases the manufacturer from
any and all claims related to the use of the Nature2Spa.
This warranty does not cover problems arising in whole or in part from
purchaser’s negligence, misuse or abuse, improper maintenance or
storage, accident, improper installation, improper application, failure to
follow all appropriate safety precautions, Acts of God, abnormal
weather conditions, damage from plants or animals, and improper use
of chemicals.
This warranty specifically excludes all incidental or consequential
damages, except where state law requires them to be paid. This
warranty gives you specific rights. You may have other rights that vary
from state to state.
TO SUBMIT A CLAIM
Report claims to Zodiac Pool Care, Inc. by calling 1-800-822-7933.
Only the original purchaser may submit a claim under this limited
warranty. Claims must be accompanied by an original
purchase receipt.
5A Trademark of Arch Chemicals, Inc.
6A Trademark of Chemtura Corporation

Troubleshooting
10
Problem What to look for
Cloudy water Spa Slow filter turnover rates
filtration
Algae Hazy spa water; may have slightly
growth green appearance.
Unbalanced 1. High hardness
water 2. High TDS (total dissolved solids)
3. High pH
4. High total alkalinity
Algae Green or Pea green to white color; attaches
white algae to spa walls, sometimes colors the
entire body of water.
Note: Do not use algae treatments containing
either copper or sodium bromide.
Stains Blue/green Copper or iron from spa equipment
corrosion or water supply
Red/brown Iron or manganese from equipment
corrosion or water supply.
Black Manganese in water supply.
Metal High native mineral content in
tarnishing water; unbalanced water
Scale Crusty High pH and high total alkalinity
deposits
on spa High TDS (total dissolved solids)
surfaces or high hardness
Algae may be
caused by
insufficient levels
of oxidizer and/or
inadequate water
circulation.
Frequently
caused by
improper start
up. See section
on Start Up and
Install the
Cartridge.

11
Treatment
1 Backwash and clean filter.
2 Run filter for 24 hours.
3 Increase run time per day.
Superchlorinate water with EPA registered source of
dichlor1according to manufacturer’s instructions.
Balance the spa water.
1 Check pH and adjust if necessary
2 Superchlorinate water with EPA registered source of
dichlor1according to manufacturer’s instructions.
3 Repeat steps 1 and 2 until algae is gone.
1 Adjust pH and total alkalinity to ideal ranges.
2 Vigorously brush stained areas.
3 Add sequestrant.
4 Run filter.
5 Twelve hours later, superchlorinate the spa.
6 Test and balance water.
7 Test spa water for dissolved metals.
Clean with soft cloth and mild detergent.
Test water for minerals; use a sequestrant;
maintain water balance.
Adjust pH and total alkalinity to ideal ranges.
1 Replace a volume of spa water with water low in hardness
and dissolved solids.
2 Use sequestrant to prevent scale buildup if high hardness
is a continuing problem.
3 If remedial action has been taken, and problem still persists,
drain and refill spa.
Consult your Nature2Dealer for additional infi or call 1-800-822-7933.

ZODIAC POOL CARE, INC.
2620 Commerce Way
Vista, CA 92081
Tel: [phone]
Fax: [phone]
www.zodiacpoolcare.com
Just dip and swirl the Test Strip.
See accurate and reliable
results on the levels of MPS2,
Alkalinity and pH in your
spa's water.
Now available at your local
Zodiac Nature2Dealer.
Nature2Spa Test Strips
Nature2is a registered trademark
of Zodiac Pool Care, Inc.
© 2007 Zodiac Pool Care, Inc.
All rights reserved.
TL-2700 6/07