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Pool Rx
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POOL RX Plus Pool Unit Blue/White (with silver)

$89.99
In Stock Locally
Delivery in the DFW metroplex
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Free Local PickupReady in 2hrs at Northlake, TX
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Product Overview

What pool techs reach for when seeking low-maintenance pool algae control—backed by proven mineral technology.

The PoolRx+ Pool Unit (SKU 331001, EPA Reg # 79817-4) provides up to six months of algaecide protection for systems holding 7,500 to 20,000 gallons. Weighing 0.72 lbs, this alloy cylinder delivers a formulation of Copper Sulphate Pentahydrate 86.85%, Zinc Sulfate Monohydrate 1.51%, Silver Nitrate 0.40% directly into circulation. In our experience, it reliably allows residential pools to operate at 0.5 to 1.0 ppm free chlorine and commercial pools at 1.0 to 5.0 ppm.

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The Pool Rx+ unit is uniquely designed with a special blend of minerals that persistently and efficiently eradicate algae. Encased within the specially treated alloy cylinder is the Pool Rx+ granular formulation. As soon as these minerals are released from the cylinder, they dissolve and create a stable residual that disperses throughout the pool water. These minerals are effective in eliminating algae, which in turn allows even low levels of chlorine in the water to become more active and efficient. Additionally, as part of the pool's filtration cycle, these minerals are continuously rejuvenated each time they pass back through the cylinder.

Passive Algae preventative

Passive Algae preventative

PoolRX Plus is a passive algaecide preventative that works continuously to keep your pool algae-free. Its innovative formula uses natural minerals to maintain water clarity and reduce algae growth effortlessly.

Lowers Chemical Demand

Lowers Chemical Demand

PoolRX Plus lowers chemical demand for your pool by reducing the need for additional algaecides and sanitizers. Its mineral-based formula enhances water balance, saving time and money on pool maintenance.

Lasts up to 6 months

Lasts up to 6 months

PoolRX Plus provides long-lasting protection, working effectively for up to 6 months. Its durable formula ensures continuous algae prevention, giving you peace of mind and less frequent maintenance.

The manufacturer’s clips

Pool Rx's feature videos

Supplied by Pool Rx — not filmed by Simplified Pools.

Why Pool Pros Trust This

Benefits & What Makes It Different

Proven Mineral Formulation

Contains Copper Sulphate Pentahydrate 86.85%, Zinc Sulfate Monohydrate 1.51%, Silver Nitrate 0.40% to destroy algae at the cellular level.

Extended 6-Month Protection

Treats pools holding 7,500 to 20,000 gallons continuously as water passes over the rejuvenating alloy cylinder.

Reduced Sanitizer Demand

Maintains clear water while allowing chlorine levels to sit at 0.5 to 1.0 ppm for residential and 1.0 to 5.0 ppm for commercial setups.

Product Details

Active Ingredient

Copper Sulphate Pentahydrate 86.85%, Zinc Sulfate Monohydrate 1.51%, Silver Nitrate 0.40%

Recommended Dosing

1 unit (0.72 lbs) per 7,500 to 20,000 gallons every 6 months

Compatibility

  • Residential and commercial pools (7,500 to 20,000 gallons)
  • Traditional chlorine, saltwater chlorine generators, ozone, and UV systems
  • Fits standard pump strainer baskets and skimmer baskets

When To Use This

Preventing recurring mustard, black, and green algae bloomsLowering chlorine demand in high-sunlight or warm-weather environmentsEnhancing water clarity in chlorine, saltwater, UV, or ozone systems

Pro Tip

Always clean or backwash your filter before dropping the PoolRx+ unit into the pump basket; trapped debris or restricted flow reduces mineral dissolution and shortens active service life.

Common Questions & Instructions

Where should the PoolRx+ 331001 mineral unit be installed?

Place the 0.72 lbs unit inside the pump strainer basket or skimmer basket after cleaning or backwashing your filter. Water must flow continuously over the unit.

What sanitizer levels are recommended with EPA Reg # 79817-4?

Maintain residential free chlorine at 0.5 to 1.0 ppm or commercial free chlorine at 1.0 to 5.0 ppm. The mineral cylinder provides residual protection alongside lower sanitizer concentrations.

What pool volume is this specific PoolRx+ unit designed for?

This blue/white pool unit is calibrated for pools between 7,500 to 20,000 gallons. For pools over 20,000 gallons, add booster minerals or secondary units.

Same-Day DFW Delivery

Delivered today to your DFW neighborhood

Order this item by 2 PM Central on a weekday, and we'll have it on your driveway by evening. Same-day delivery is FREE to every ZIP in our DFW coverage area — no minimum — or it's free with our weekly service plan.

Free checklist

The DFW month-by-month pool checklist

What it covers (12 months · 76 tasks · 12 marked critical):

  • Freeze nights (January and December): keep the pump running, and what to drain if the power goes out
  • The March opening: test everything, brush, shock, then balance alkalinity, pH and calcium
  • Summer: testing two or three times a week, the weekly shock, and what to do after rain or a party
  • Fall leaves, and easing the chemistry down for winter
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One email with a link to the printable checklist — print it, or save it as a PDF, from that page. That is all we send: no mailing list.

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