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POOL EDUCATOR & HELP
MajorPoolSupplies.com is here to help! Please feel free to read through our extensive Pool Educator & Help section. If you have ANY questions that are not covered in our material or have a suggestion on how to improve this section, please feel free to contact us.
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Choosing the Right Heater

Gas heater, heat pump or electric? Compare how each one heats, what it costs to run, and how to size a heater by BTU for your pool or spa.
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D.E. Filtration Maintenance

D.E. filters give the finest filtration but need regular care. Learn how to backwash, add the right amount of fresh D.E. and deep-clean the grids.
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Choosing the Right Size Pump

Bigger is not always better. Work out the flow your pool needs from turnover time, then match a pump to your plumbing, filter and head.
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Choosing the Right Filter

Sand, cartridge or D.E.? See how fine each filter cleans, how much upkeep it needs and how to pick the right size for your pool.
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Cartridge Filter Cleaning Instructions

A step-by-step routine for cleaning pool and spa cartridges, from knowing when to clean to soaking, rinsing and deciding when to replace.
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Understanding What You Are Testing in Your Chemistry

What chlorine, pH, alkalinity, hardness, stabilizer and salt readings mean, the usual target ranges, and which one to adjust first.
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How to Choose a Salt Water Pool System

How a salt chlorine generator turns dissolved salt into chlorine, how to size the cell, and the upkeep to expect after switching to salt.
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How to Choose the Right Pool Cleaning System

Suction, pressure or robotic? Compare how each type of automatic cleaner works, what debris it handles and what it costs to run.
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Hydraulics

Flow, head, friction loss and pump curves in plain English, plus what your pressure gauge is telling you about the whole system.
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Maintaining Your Pool Weekly

A simple weekly checklist covering skimming, brushing, baskets, filter pressure, water testing and a quick look over your equipment.
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Pool Pumps and Motors

What is inside a pool pump, single-speed versus variable-speed motors, common warning signs and when to repair or replace.
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Sand Filtration

How a sand filter traps dirt, which media to use, what each multiport valve setting does and how often the sand needs changing.
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Sand Filtration Maintenance

When to backwash, how long to rinse, how to deep-clean filter sand and the steps for replacing it when it wears out.
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Advanced Purification

Salt systems, ozone, UV and minerals each help chlorine work better. Learn what each one does and where its limits are.
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Pool Pump Won't Prime or Loses Prime

Air leaks at the lid, a dry strainer or a low water level are the usual culprits. Work through the checks in order to get the pump pulling water again.
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Pool Pump Motor Hums but Won't Start

A humming motor that will not spin often points to a capacitor, a seized shaft or a jammed impeller. Learn what to check safely before replacing the motor.
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How to Find Your Pool Part Number

Where to find the model and part numbers on pumps, filters, heaters and valves, and what to note before ordering a replacement part.
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Salt Cell Not Producing Chlorine

Low salt, scale on the plates, low flow or a worn cell can all stop chlorine output. Step through the checks before buying a new cell.
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How to Choose a Replacement Filter Cartridge

Match a new cartridge by length, diameter, center hole and square footage, and learn when cleaning is no longer enough.
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D.E. Filter Grid Replacement Guide

Torn or worn grids let D.E. powder back into the pool. See how to spot a bad grid and swap grids or a complete assembly.
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Pool Heater Won't Ignite

Common reasons a gas pool heater will not light, from low flow and pressure switches to igniters and gas supply, with safe first checks.
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Pool Cleaner Not Moving

When an automatic cleaner stalls or circles, check flow, hoses, bags, tracks and belts. A guide for suction, pressure and robotic models.
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Hayward vs Pentair vs Jandy Replacement Parts

How the major brands differ on common replacement parts, and when an exact OEM part or a compatible generic part makes sense.
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Pool Winterizing and Spring Opening Parts Checklist

The parts and supplies to have on hand when you close the pool for winter and open it again in spring, so nothing holds you up.
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Spa Pack Topside Error Codes

What common spa control panel error codes usually mean, what you can check yourself and when the problem is in the spa pack.
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Pump Shaft Seal Leak Replacement

Water dripping between the pump and motor usually means a worn shaft seal. Learn how to confirm it and replace the seal step by step.
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