Rx Clear 3 in Chlorine Tabs 100 lb - Slow Dissolve, UV Stabilized

Our review finds the Rx Clear 3 in chlorine tabs best suited for pool owners who want a low-maintenance sanitizer that keeps water clear for days at a time. In this review the biggest reason to buy is its combination of high available chlorine and UV stabilization, which together reduce odor, limit chlorine loss from sun exposure, and help maintain consistent levels with minimal fuss. The tablets are slow dissolving and designed for floating dispensers and automatic feeders, making them practical for seasonal pool care without constant monitoring.

Key Features

• High available chlorine: Composed of about 90% available chlorine, the tablets rapidly address algae and bacteria while reducing strong chemical odors.
• Slow dissolving: The 3 in tablets dissolve gradually so they can be used safely in floating chlorinators and automatic feeders without frequent refilling.
• UV protection: Stabilized formulation helps prevent chlorine loss from sunlight and extends effective sanitizing up to about 7 days.
• Family and pet friendly: Designed to maintain steady chlorine levels that help protect swimmers and pets when used as directed.
• Versatile compatibility: Safe to use on all common pool surfaces and in spas, hot tubs, vinyl, tile, fiberglass, and gunite when dispensed correctly.

Who It's For

The Rx Clear 3 in tabs are ideal for homeowners with medium to large pools who prefer hands-off maintenance and want consistent sanitization without daily dosing. They appeal to families who want reduced odor and lower risk of skin irritation, and to anyone who runs a floating chlorinator or automatic feeder.

Those with very small pools, baths used only occasionally, or users who need rapid shock-level chlorination should look for fast-dissolving or granular products instead, since these tablets are formulated for sustained release rather than immediate high-dose corrections.

Pros & Cons

Pros

• High chlorine content gives reliable sanitation and improved water clarity over time.
• Slow-dissolving tablets work well in floating dispensers and automatic feeders for low-maintenance dosing.
• UV-stabilized formula reduces chlorine loss in sun-exposed pools, protecting liners and extending effectiveness.
• Broad compatibility with pool surfaces and suitability for family and pet use when used as directed.

Cons

• Some customers report tablet breakage during handling, which can affect dissolution consistency.
• Dissolve rate is slow by design, so it is not suited for rapid shock treatments.

Specifications

Our Verdict

Rx Clear 3 in chlorine tabs are a practical, cost-effective choice for routine pool sanitation, delivering strong chlorine content with stabilizers that reduce sun-related loss. They are good value for homeowners who want steady, low-effort maintenance and crystal clear water, while users needing quick shock treatments should supplement with a fast-acting product.

Frequently Asked Questions

Can these tablets be used in floating dispensers?
Yes, they are slow dissolving and designed to be safe for floating chlorinators and standard chlorine dispensers.

Are they safe for pool liners and other surfaces?
Yes, the formulation is UV stabilized and compatible with vinyl, tile, fiberglass and gunite when used according to directions.

How often do they need replacing?
Because tablets dissolve slowly and are UV stabilized, they can last several days in a dispenser, typically up to about 7 days depending on pool conditions and dispenser setting.