PoolRx+ Black Unit; 20K-30K Gallons 331066
PoolRX
SKU: 331066
PoolRx+ 331066 Black/White Unit 20K-30K Gallons
The PoolRx+ 331066 Black/White Unit is a mineral-based pool algaecide unit designed for swimming pools from 20,000 to 30,000 gallons. PoolRx+ contains a proprietary blend of minerals that dissolve into the pool water to help eliminate algae, reduce chemical demand, and simplify routine pool care.
This single PoolRx+ unit is commonly used in chlorine, salt, UV, and ozone pool systems where extra algae control is needed during the swimming season. The unit is placed in the skimmer or pump basket and is designed to provide ongoing algae protection for up to 6 months, depending on pool conditions, water chemistry, filtration, splash-out, and backwashing.
Product Features
- Genuine PoolRx+ Black/White pool unit
- Manufacturer part number: 331066
- Treats pools from 20,000 to 30,000 gallons
- Mineral-based algaecide for swimming pools
- Helps eliminate pool algae and reduce chemical demand
- Effective for up to 6 months under normal conditions
- Compatible with chlorine, salt, UV, and ozone pool systems where specified
- Designed for placement in the pump basket or skimmer with proper water flow
- NSF/ANSI/CAN 50 certified where listed by PoolRx+
Product Details
| Brand | PoolRx+ |
| Part Number | 331066 |
| Product Type | Mineral Algaecide Pool Unit |
| Color / Size | Black/White Unit |
| Pool Size | 20,000 to 30,000 gallons |
| Net Weight | 1.2 lbs |
| System Compatibility | Chlorine, salt, UV, and ozone pool systems where specified |
| Application | Pool algae control and routine water care support |
Active Ingredients
- Copper Sulfate Pentahydrate
- Zinc Sulfate Monohydrate
- Silver Nitrate
Common Uses
- Helping control algae in residential swimming pools
- Reducing chlorine demand when water is properly balanced
- Supporting routine pool maintenance during warm weather
- Use in compatible salt chlorine generator pools
- Seasonal pool startup after the filter has been cleaned
- Replacing an older PoolRx+ unit at the start of a new swim season
Compatibility
- Pools from 20,000 to 30,000 gallons
- Chlorine pools where PoolRx+ is compatible with the pool surface and equipment
- Saltwater pools where PoolRx+ is compatible with the pool surface and equipment
- UV and ozone systems where routine sanitizer levels are still maintained
- Applications requiring PoolRx+ part number 331066
Important Notes
- This item is one PoolRx+ Black/White unit only.
- Chlorine, shock, pH adjusters, alkalinity adjusters, stain removers, metal removers, replacement boosters, and test kits are sold separately unless otherwise stated.
- PoolRx+ is not a replacement for maintaining proper sanitizer levels, pH, alkalinity, cyanuric acid, calcium hardness, filtration, or circulation.
- Always read and follow the product label before use.
- It is a violation of federal law to use this product in a manner inconsistent with its labeling.
- Test pool water for metals such as copper or iron before use, especially if the pool has a history of staining or metal issues.
- Do not use the wrong size PoolRx+ unit for the pool volume.
- For best results, start with a clean filter and balanced water before installation.
- Pool surface, heater, sanitizer, and equipment conditions should be evaluated before adding any mineral product.
Installation Notes
- Clean or backwash the filter before adding the PoolRx+ unit.
- Remove debris from the skimmer basket and pump basket before installation.
- Check that pH is between 7.2 and 7.8 before adding the unit.
- Check that chlorine is below 10 ppm before installation.
- Place the unit in the pump basket or skimmer where there is strong water flow.
- Ideally add the unit when the pump has at least 3 to 4 hours left in the run cycle.
- Run the pump during the heat of the day and maintain proper circulation.
- Allow the pool to turn over fully according to the pool’s volume and flow rate.
- Do not clean or backwash the filter too soon after installation unless the pool is dirty or the product label directs otherwise.
Related Products
- PoolRx+ 331066 Black/White Unit, 20K-30K Gallons
- PoolRx+ 331067 Black Unit 4-Pack, 20K-30K Gallons
- PoolRx+ 331001 Blue/White Unit, 7.5K-20K Gallons
- PoolRx+ 331003 Blue/White Unit 4-Pack, 7.5K-20K Gallons
- PoolRx+ 331055 Spa Unit, 400-1K Gallons
Maintenance Tips
- Maintain normal sanitizer levels even when using PoolRx+.
- Keep pH, alkalinity, calcium hardness, and cyanuric acid within proper ranges.
- Clean the filter as needed so dead algae and debris can be removed from circulation.
- Brush and vacuum the pool as part of normal maintenance.
- Add the correct PoolRx+ booster only when the label directions indicate replenishment is needed.
- Replace the PoolRx+ unit at the beginning of each swim season or as directed by the product label.
- Investigate recurring algae issues, high chlorine demand, poor circulation, or dirty filters before adding additional chemicals.
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 7:00 am to 5:00 pm Phoenix Time
Saturday: 8:00 am to 2:00 pm
Sunday: Closed
- We do not ship on Saturday or Sunday.
- Orders totaling more than $300 will require signature confirmation upon delivery.
- We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
- Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
- Expedited shipping options are available at checkout.
Return Policy:
- Products that are received damaged will receive a refund in store credit.
- Most products are eligible for return within 30 days of receipt, except where noted below.
- To initiate a return, please complete an RMA form prior to sending your item back.
- Original shipping costs are non-refundable and will be deducted from the return credit.
- Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
- Some returns will be charged an automatic 15% restocking fee.
- We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
- Please complete the return form to receive your RMA number and return shipping label.
- Chemical products are not eligible for return under any circumstances.
- The Pentair Colorsync 618031 is not eligible for return.
- Pool cleaners are not eligible for return.
- Opened seals and o-rings are not eligible for return.
- Capacitors are not eligible for return.
- Plastic popup tools are not eligible for return.
- Automation components and circuit boards are not eligible for return.
- If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
- Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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