Zodiac Nature2 N2CN25 User manual

EPA Reg. No. 67712-1
EPA Est. No. 091258-MEX-001
IMPORTANT
Pool Owner, save this manual! Builders, leave this manual with the pool owner!
For Inground Pools and Aboveground Pools
OWNER’S MANUAL
EQUIPMENT UNDER PRESSURE
• In order to minimize risk of property damage and/or serious injury, including loss of life,
always turn pump off prior to installing or changing Nature2cartridge. Your pump/filter system is
operated under pressure and the pressure must be released before you begin work. Please see
your pump/filter 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 pool’s operational system. Locate the components of your operational system at least 3
feet from the pool so children cannot use the equipment to access the pool and be injured or drown.
LOW CHLORINE RECIPE
• You must strictly follow the low chlorine 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.
WARNING
Failure to heed the following can result in
permanent injury or drowning.
!
The Nature2SP Pool
Sanitizer is designed only
for residential swimming
pools.
PRECAUTIONARY STATEMENT
HAZARDS TO HUMANS AND DOMESTIC 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
!
* The Nature2System consists of
the Nature2technology†used in
conjunction with a chlorine delivery
device or 0.5 ppm of an EPA
registered chlorine pool product.
†Nature2technology consists of
the minerals silver and copper.
Safety Instructions
Important Information Please read prior to installation
TL-2661 Rev J
This owner’s manual cover the following Nature2SP cartridges:
N2CN25 - For pools 5,000 - 25,000 gallons
N2CN35 - For pools 25,000 - 35,000 gallons
N2CW25 - For pools 5,000 - 25,000 gallons
N2CW35 - For pools 25,000 - 35,000 gallons

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DIRECTIONS FOR USE:
It is a violation of Federal law to use this product in a manner inconsistent with its labeling.
NATURE2SP COMPATIBILITY
Nature2Systems can be used with all types of pool chemical treatments available except biguanide products
and copper based algaecides.
Important: When converting a biguanide treated pool to the Nature2low chlorine System, the pool must be
completely drained and refilled. Then follow the Nature2cartridge start-up procedure below.
Important: Please make sure that the Natue2SP cartridge you have selected corresponds to your swimming
pool size based on gallons of water. Using a Nature2SP cartridge for an undersized pool may cause staining
of the pool.
Start Up
• Before starting up a new Nature2SP cartridge, clean debris and algae out of the pool and pool equipment.
Important: Do not install the new cartridge until the pool water is clean and chemically balanced.
• Balance pool water before installing Nature2SP cartridge.
- pH 7.4-7.8
- Calcium hardness 200-400 ppm
- Total alkalinity 80-150 ppm
Consult with your Nature2Dealer for specific water balance instructions.
We ask you to take the time to get familiar with this manual.
Thank you for purchasing Nature2SP. We believe the more you know, the more enjoyable your family’s
swimming experience will be – and the more you will reduce the time, effort and cost of maintaining your
pool. Pool owners who switch from conventional chemical programs to the Nature2System* spend less time
maintaining their pools. Every pool has its own characteristics of water type, amount of sunlight, etc. The
recipe included in this manual will help insure good water quality for your pool. Remember, your Nature2SP
dealer can provide advice and service.
CONTENTS PAGE
Safety Instructions .......................................................................1
Start Up ...............................................................................2
Balance the Water .......................................................................3
Install the Cartridge ......................................................................3
Installation Instructions for Hayward®Cartridge Filters ...........................................4
Recipe ................................................................................5
Provide Filtration/Circulation................................................................6
Nature2SP Cartridge Replacement Intervals ..................................................6
Winterizing Your Pool.....................................................................7
Disposal ...............................................................................7
Troubleshooting Guide ....................................................................8
Limited Warranty .......................................................................12

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Owner’s Manual |Zodiac®Nature2® SP Cartridge
Balance the Water
To find out if your pool water is balanced:
• take a water sample to your dealer to be tested regularly, or
• ask your dealer to recommend a pool test kit for water balance.
Element: pH
Range: 7.4-7.8
Element: Calcium Hardness
Range: 200-400 ppm
Element: Total Alkalinity
Range: 80-150 ppm
If it’s too low:
How to fix:
If it’s too high:
How to fix:
If it’s too low:
How to fix:
If it’s too high:
How to fix:
If it’s too low:
How to fix:
If it’s too high:
How to fix:
The surface of your pool can become etched.
Metal parts in the pump and plumbing will corrode.
Add pH increaser.
“Scale” forms on the surface of your pool.
The water can become cloudy.
Equipment can become damaged.
Add pH decreaser.
Water is less stable.
In plaster pools, the calcium is taken out of the plaster,
causing the surface to deteriorate.
Add calcium hardness increaser.
Rough, discolored deposits (“scale”) will form on the
pool surface and inside pool equipment.
Drain or dilute the pool water.
Consult your dealer.
It provides no buffer so that you constantly get
fluctuating pH readings, which can damage equipment
and pool surfaces.
Use an alkalinity increaser.
White deposits (“scale”) form on the tile line.
The plaster on pool surface becomes rough or
discolored.
The water becomes cloudy or milky white.
Add acid to bring alkalinity down.
Install the Cartridge
1 Install the cartridge after water is balanced. Refer to your Nature2SP operating manual for additional
instructions.
2 Superoxidize the pool water with chlorine according to manufacturer’s instructions to burn off
contaminants and activate cartridge.
Important: Initial superoxidation with chlorine is required to burn off contaminants and activate cartridge.
3 Run the circulating pump either:
• 24 hours a day for 4 days, maintaining 1-2 ppm free chlorine throughout, or
• 6 hours a day for 14 days, maintaining 1-2 ppm free chlorine throughout.
4 Let chlorine dissipate to 0.5 ppm once start up period is completed.
• Do not enter the pool if the free available chlorine residual is over 3 ppm.

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Installation Instructions for Hayward®Cartridge Filters
Important
Please make sure that the Nature2SP cartridge you have selected corresponds to your swimming pool size
based on gallons of water. See cartridge chart below.
Model
Number
Filter Series Pool Size
(Gallons)
Replaces
N2CN25 C400, C550, C850, C1250,
C2020, C2000, C3020, C3000,
C4020, C4000, C5020, C5000
5,000 - 25,000 N2C400, N2C550, N2C850,
N2C1250, N2C2000, N2C3000,
N2C4000, N2C5000
N2CWN25 C751, C830, C900, C1100,
C1200, C1500, C1750
5,000 - 25,000 N2C900, N2C1200, N2C1750
N2CN35 C2020, C2000, C3020, C3000,
C4020, C4000, C5020, C5000
25,000 - 35,000 N2C2000, N2C3000, N2C4000,
N2C5000
N2CWN35 C751, C800, C900, C1100,
C1200, C1500, C1750
25,000 - 35,000 N2C900, N2C1200, N2C1750
Installation
Before starting up a new Nature2SP System, clean debris and algae out of pool and equipment.
1. Balance pool water as specified in “Balance Water” section of this manual.
2. Install the system.
a. Turn off the pump.
b. If filter is located below water level, close valves
(or block off suction and discharge lines) to prevent backflow of water from pool.
c. Unscrew and remove drain plug and allow water to drain from filter. Close drain plug.
Note: To assist draining process, open vent valve a few turns.
d. Remove the filter head:
On models with locking knob, unscrew knob.
On models with Easy-Lok™ lid, depress safety-latch and unscrew Easy-Lok lid.
On models with clamp assembly, remove clamp.
Note: Refer to Owner’s Guide provided with your filter for specific instructions on disassembly.
e. Remove cartridge element(s).
Note: On multi-element filters, remove top closure plate before removing cartridge elements.
f. Clean cartridge element(s).
Note: Refer to Owner’s Guide for your filter.

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Owner’s Manual |Zodiac®Nature2® SP Cartridge
g. Clean debris from bottom of filter tank.
h. Follow the instructions provided by your filter Owner’s Guide to re-install the cartridge element back
into the filter.
i. Install the Nature2SP System:
Lower the Nature2SP system into the center of the cartridge element with either side up. If your filter
is a multi-cartridge element filter, place the system into the center of any cartridge element with the
side showing Hayward®face-down.
Note: Filters that use multiple elements only require one system. The system can be placed inside
any one of the four cartridge elements.
j. Reassemble the filter head:
On models with locking knob: Replace head and locking knob. Tighten locking knob in clockwise
direction. (Hand tight only)
On models with Easy-Lok lid: Place Easy-Lok lid on filter body and turn clockwise until it engages
and is secured by the safety latch.
On models with clamp assembly: Replace head and clamp assembly.
Note: Refer to Owner’s Guide provided with your filter for specific instructions.
3. Important: Record the installation date of your Nature2SP System and replace the Nature2SP unit
after six (6) months.
Low-Chlorine Recipe
Ingredients:
• Nature2SP Cartridge
• Chlorine granules, tablets, liquid or generator
• pH and total alkalinity adjusting chemicals
• Calcium hardness increaser, if needed
• Water test kit
Recipe
There is one (1) 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 Nature2pool.
Once the 4-day or 14-day start-up period is done, allow the free available chlorine residual to drop to 0.5 ppm
(by reducing the amount of chlorine you add) then:
When: What to do:
Every day Run pump and filter at least six (6) hours every day.
Once a week Balance pH and total alkalinity.
Twice a week Check chlorine residual; add chlorine to maintain at least a 0.5 ppm range using the chart below.
As needed If water is hazy, superoxidize with chlorine according to manufacturer’s instructions.
Additional shocking is recommended following rainstorms or heavy bather load.
Do not re-enter the pool if the free available chlorine residual is over 3 ppm.

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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 six (6) hours a day.
Consult your Nature2dealer for optimum run times.
Filtration Check the pool’s filter periodically and clean it as recommended by the manufacturer.
Add the following amounts of chlorine per 10,000 gallons of water to increase free chlorine by 0.5 ppm.
Type of Chlorine % Active % Available Ounce Quantity Gram Quantity
Containing Compound Ingredient Chlorine Content Required Required
Sodium Hypochlorite Liquid 5.25 5.25 12.7 361
Sodium Hypochlorite Liquid 9.2 9.2 7.3 206
Sodium Hypochlorite Liquid 10 10 6.5 184
Sodium Hypochlorite Liquid 12 12 5.6 158
Calcium Hypochlorite 65 64 1.1 30
Dichloroisocyanurate 99 62 1.1 30
Lithium Hypochlorite 29 35 1.9 54
Trichloro-s-triazintrione 99 90 0.7 21
Chlorine Gas, from any source 100 100 0.7 19
including chlorine generators
Nature2® SP Cartridge Replacement Intervals
Always turn pump off prior to installing or changing a Nature2SP cartridge. Your pump/filter is operated under
pressure and the pressure must be released before you begin work. Please see your pump/filter owner’s
manual for further instructions. A cartridge lasts six (6) months or one (1) season, whichever is shorter. The
cartridge should not be used longer than six (6) continuous months.
In frost-belt regions (3-6 month pool season): Discard your used system when you close your pool at the
end of the season. Install a new system when you open your pool in the spring.
In sun-belt regions (7-12 month pool season): Replace your Nature2SP cartridge every six (6) months
whether on not you plan to use the pool for swimming.

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Owner’s Manual |Zodiac®Nature2® SP Cartridge
Disposal
After six (6) months of use, discard Nature2SP cartridge 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 pool.
Winterizing Your Pool
Use these steps as a guide. Consult your dealer for specific information in your area.
Warm Climate
1. Reduce the number of hours the pump runs since the cooler weather decreases the spread of algae
and other pollutants.
2. There is no need to superoxidize the pool during cool weather unless the water becomes cloudy (as
may occur after a winter storm). See Cloudy Water in Troubleshooting section.
Cold Climate
1. Check total alkalinity and pH of pool to make sure that they are in proper balance.
2. Vacuum the pool bottom to remove any debris or other potential contaminants.
3. Superoxidize the pool with chlorine according to manufacturer’s instructions to clear the water.
4. Add a winter algaecide following manufacturer’s instructions.
Important: Do not use a winter algaecide with copper in it. This will void the Nature2no-stain warranty.
5. Backwash the filter.
6. Drain part of the pool water. The amount to drain varies from one part of
the country to another. Consult your dealer for advice.
7. Remove the Nature2cartridge and discard with household trash.
8. Winterize the pipes with pool antifreeze following manufacturer’s instructions.
9. Drain the water out of all equipment (pump, filter, etc.).
10. Store all baskets, hoses and cleaning equipment, indoors if possible.
11. Cover the pool with a winter cover.

Page 8 ENGLISH Zodiac®Nature2® SP Cartridge |Owner’s Manual
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.
Troubleshooting Guide
Problem What to look for
Cloudy water Poor filtration Slow filter turnover rates.
Algae growth Hazy pool water; may have slightly
green appearance.
Unbalanced water 1. High hardness
2. High TDS (total dissolved solids)
3. High pH
4. High total alkalinity
Algae Green algae Pea green color; attaches to pool walls; and
sometimes colors the entire body of water.
Black algae Black spots on pool walls.
Mustard algae Yellow or brown film on steps or walls.
Note: Regular algaecide treatments are recommended for outdoor pools
that experience persistent algae problems. Do not use algae treatments
containing copper.
Stains Blue/green
Copper or iron from pool equipment
corrosion or water supply.
Red/brown
Iron or manganese from equipment
corrosion or water supply.
Black Manganese in water supply.
Metal tarnishing High native mineral content in
water; and unbalanced water.
Scale Crusty deposits on High pH and high total alkalinity.
pool surfaces
High TDS (total dissolved solids)
or high hardness levels.

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If you need further assistance please call 1-800-822-7933.
Treatment
1. Backwash and clean filter.
2. Run filter for 24 hours.
3. Increase run time per day.
Superchlorinate water (with chlorine according to manufacturer’s instructions)
and brush pool walls.
Balance the pool water.
1. Check pH and adjust if necessary.
2. Superchlorinate water (with chlorine according to manufacturer’s instructions) and brush pool walls.
3. Repeat steps 1 and 2 until algae is gone.
1. Brush affected areas.
2. Superchlorinate water (with chlorine according to manufacturer’s instructions).
3. Add algaecide.
4. Vacuum pool.
5. Repeat steps 1 through 4 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 pool.
6. Test and balance water.
7. Test pool water for dissolved metals.
Clean with soft cloth and mild detergent.
Test water for minerals; use a sequestrant; and
maintain water balance.
Adjust pH and total alkalinity to ideal ranges.
1. Replace a volume of pool water with water
low in hardness and dissolved solids.
2. Use sequestrant to prevent scale buildup if
high hardness levels are a continuing problem.

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NOTES

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Owner’s Manual |Zodiac®Nature2® SP Cartridge
NOTES

Zodiac Pool Systems LLC
2620 Commerce Way, Vista, CA 92081
1.800.822.7933 | www.ZodiacPoolSystems.com
©2017 Zodiac Pool Systems LLC. All trademarks
referenced herein are the property of their respective
owners. ZODIAC®is a registered trademark of Zodiac
International, S.A.S.U., used under license.
TL-2661 Rev J
Limited Warranty
NATURE2® SP LIMITED WARRANTY
The limited warranties contained within this document are the only warranties given with your Nature2 SP
Cartridge and supercede any prior warranties. All other warranties, expressed or implied, including the
implied warranty of merchantability or the implied warranty of tness 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 Nature2 SP Cartridge. The Nature2 SP warranty applies to the original owner only.
THE LIMITED WARRANTIES OF THE NATURE2 SP SANITIZER
Nature2 SP is warranted to be free of defects in materials and to perform satisfactorily for a period of six
months from the date of purchase. Nature2 SP Cartridges are warranted not to cause copper staining in your
pool. This limited warranty requires that you exercise reasonable care of your pool and keep water in balance
at all times and not use a copper-based algaecide. This limited warranty does not cover discoloration to
chromium ttings. This warranty does not cover cartridges used with any biguanide products. If the cartridge
is defective and does not perform satisfactorily for the entire six months, we will make a prorated rebate
based on your actual period of use. You are responsible to pay the below-indicated percentage on the then
applicable retail cost: < 1 month-0%; 1-2 months- 25%; 3-4 months-50%; 5-<6 months-75%.
EXCLUSIONS FROM WARRANTY
Nature2 SP is designed for use on pools with cartridge lters from 5,000 to 25,000 gallons (N2CN25,
N2CW25) or 25,000 - 35,000 gallons (N2CN35, N2CW35). If it is used in any other application, the warranty
is void, and the purchaser and/or pool owner releases the manufacturer from any and all claims related to the
use of the Nature2 SP.
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 specically excludes all incidental or consequential damages, except where state law requires
them to be paid. This warranty gives you specic rights. You may have other rights that vary from state to
state.
TO SUBMIT A CLAIM
Report claims to Zodiac Pool Systems LLC by calling 1-800-822-7933. Only the original purchaser may
submit a claim under this limited warranty. All claims must be accompanied by an original purchase receipt.