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Choosing Your Sanitizer - Salt vs Chlorine

Compare liquid chlorine, SWGs, tablets, and supplemental systems without pretending any of them are “chemical free.”

Hub: Equipment · When to use: You are choosing a sanitizer system for a new build, major renovation, or equipment upgrade.

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Choosing Your Sanitizer

Compare liquid chlorine, SWGs, tablets, and supplemental systems without pretending any option removes the need to understand chlorine chemistry.

For residential pools, primary sanitation still comes back to chlorine chemistry.

Liquid chlorine adds chlorine directly.

Salt-water generators produce chlorine from salt in the water.

Trichlor and dichlor add chlorine while also adding stabilizer.

UV, ozone, minerals, and ionizers are supplements, not standalone sanitation for typical residential use.

This is the simplest control path: fewer parts, fewer failure modes, and direct dosing.

No sanitizer hardware is required beyond normal circulation equipment.

You control when and how much chlorine is added.

It pairs well with owners who test regularly and want simple troubleshooting.

SWGs buy convenience, not freedom from testing.

An SWG automates daily chlorine production.

It adds equipment cost, cell maintenance, and scale-management attention.

Salt targets, cleaning frequency, and service life vary by manufacturer.

Stop conditions / cautions

• Corrosion risk depends on materials, bonding, local environment, and water balance. It is not accurate to describe salt as universally catastrophic or universally harmless.

Tablets can be useful, but the stabilizer side effect is the real long-term decision.

Trichlor and dichlor raise CYA while they chlorinate.

Long-term use without CYA tracking can make chlorine targets impractical.

They work best when used intentionally, not as a default all-season habit.

Choose based on maintenance style, budget, and site constraints rather than marketing language.

Choose liquid chlorine if you want the least sanitizer-specific equipment complexity.

Choose SWG if you value automated daily production and are comfortable maintaining the cell and salt range.

Use tablets intentionally and temporarily if their stabilizer side effect fits your plan.

1Understand that primary sanitation still comes from chlorine, even in salt pools.
2Compare SWG convenience against scaling, cell maintenance, and material compatibility considerations.
3Treat corrosion as a balance/materials/bonding issue, not a universal salt-pool outcome.
4Know why tablets can quietly drive CYA too high if you use them as a default chlorination strategy.

Prioritize pumps, filtration, test gear, and safety basics before you spend money on convenience upgrades.

Use construction-phase decisions to reduce future chemistry drift, debris load, and hydraulic headaches.

Identify what you have on the pad, pull the manuals, and build the reference list that prevents bad maintenance guesses.