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For Inground Pools and Aboveground Pools
IMPORTANT
Pool Owner, save this manual! Builders, leave this manual with the pool owner!

Safety Instructions

Important Information
This owner's manual cover the following Nature
N2CN25 - For pools 5,000 - 25,000 gallons
N2CN35 - For pools 25,000 - 35,000 gallons
WARNING
!
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 Nature
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.
CAUTION
!
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.
OWNER'S MANUAL
Please read prior to installation
2
SP cartridges:
N2CW25 - For pools 5,000 - 25,000 gallons
N2CW35 - For pools 25,000 - 35,000 gallons
Failure to heed the following can result in
permanent injury or drowning.
2
cartridge. Your pump/filter system is
EPA Reg. No. 67712-1
EPA Est. No. 091258-MEX-001
The Nature 2 SP Pool
Sanitizer is designed only
for residential swimming
pools.
* The Nature 2 System consists of
the Nature 2 technology
conjunction with a chlorine delivery
device or 0.5 ppm of an EPA
registered chlorine pool product.
Nature 2 technology consists of
the minerals silver and copper.
used in

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Summarization of Contents

Safety Instructions
Equipment Under Pressure Warning
Hazards associated with operating equipment under pressure, requiring pump shutdown before work.
Prevent Child Drowning
Safety measures to prevent children from accessing pool equipment and drowning.
Low Chlorine Recipe
Importance of following a specific low chlorine recipe for water chemistry and health.
Hazards to Humans and Domestic Animals
Precautionary statements regarding ingestion of cartridge minerals and first aid.
Start Up
Before Starting Up
Clean debris, ensure water is clean and chemically balanced before installing the cartridge.
Balance Pool Water
Recommended pH, calcium hardness, and total alkalinity levels for pool water balance.
Balance the Water
pH Balance
Target pH range (7.4-7.8) and actions for too low or too high pH.
Calcium Hardness Balance
Target calcium hardness range (200-400 ppm) and actions for too low or too high levels.
Total Alkalinity Balance
Target total alkalinity range (80-150 ppm) and actions for too low or too high levels.
Install the Cartridge
Installation Steps Overview
Steps for cartridge installation: balance water, install, superoxidize, run pump, and chlorine dissipation.
Installation Instructions for Hayward® Cartridge Filters
Cartridge Selection Chart
Chart matching Nature2 SP cartridge models to pool sizes and filter series.
Installation Procedure
Detailed steps for installing the Nature2 SP system into Hayward cartridge filters.
Recipe
Low-Chlorine Recipe Ingredients
List of necessary ingredients for the low-chlorine pool maintenance recipe.
Low-Chlorine Recipe Tasks
Tasks for daily, weekly, and as-needed maintenance following the low-chlorine recipe.
Provide Filtration/Circulation
Circulation Requirements
Requirement to run the pump at least six hours daily for proper circulation.
Filtration Maintenance
Importance of checking and cleaning the pool filter periodically.
Nature2® SP Cartridge Replacement Intervals
Replacement Schedule
Cartridge replacement every six months or one season, whichever is shorter.
Regional Replacement Advice
Replacement advice for frost-belt (seasonal) and sun-belt (year-round) regions.
Winterizing Your Pool
Warm Climate Winterizing
Steps for winterizing a pool in warm climate conditions.
Cold Climate Winterizing
Steps for winterizing a pool in cold climate conditions, including cartridge removal.
Disposal
Cartridge Disposal Instructions
Instructions for disposing of the used Nature2 SP cartridge in household trash after six months.
Troubleshooting Guide
Cloudy Water
Common causes of cloudy water like poor filtration and unbalanced water.
Algae Growth
Types of algae and their causes, such as low oxidizer or inadequate circulation.
Stains and Scale
Identification and causes of various pool stains and scale deposits.
Troubleshooting Treatments
Treating Cloudy Water
Steps to treat cloudy water: backwash, run filter, adjust pH, and superchlorinate.
Treating Algae
Steps to treat algae: superchlorinate, brush, add algaecide, and vacuum.
Treating Stains
Steps to treat stains: brush, add sequestrant, run filter, superchlorinate, and test metals.
Treating Scale
Steps to treat scale: adjust balance, use sequestrant, and replace water if needed.
Limited Warranty
Nature2 SP Limited Warranty
Details the limited warranties for the Nature2 SP Cartridge and sanitizer.
Exclusions From Warranty
Lists conditions and uses that void the Nature2 SP warranty.
How to Submit a Claim
Instructions on how to submit a claim under the limited warranty.

Table of Contents