Bio-Dex Aquadex 50 Stain Off
Best stain remover for pool owners battling stubborn metal and cobalt buildup.
Revitalize your swimming pool or spa with Bio-Dex Aquadex 50 Stain Off. This powerful 1-gallon liquid solution is expertly formulated to tackle stubborn metal and cobalt stains, particularly on plaster and fiberglass surfaces. Watch as it effectively combats copper, iron, and black cobalt build-up, with visible results typically appearing within 48 hours and up to 10 days. Its easy-to-apply liquid form makes maintenance straightforward, ensuring a cleaner, more inviting pool. The recommended dosage is 1 quart per 10,000 gallons for optimal performance.
$109.99
Owner Satisfaction
4.7
/ 5
Category Rank
3
/ 1289
#3 in Pool Cleaners & Chemicals
Price vs Category Average
+62%
Above average
Volume
1.
/ gal
Who it's for
- Pool owners battling stubborn iron, copper, or manganese stains
- Homeowners protecting delicate plaster, vinyl, or fiberglass pool finishes
- Maintenance-focused users wanting both stain removal and long-term prevention
Who should skip it
- Pool caretakers who prefer avoiding post-treatment chemical balancing
- Budget-conscious buyers managing severe, large-scale staining issues
- Users dealing with organic stains from leaves or algae
Performance breakdown
Stain Removal Efficacy
Aggressively targets stubborn metal and cobalt deposits with high chemical precision.
Surface Versatility
Reliable performance across both plaster and fiberglass pool finishes.
Application Simplicity
Liquid formula allows for quick, mess-free dosing directly into the water.
Treatment Speed
Visible results appear within a reasonable window for deep-set chemical cleaning.
Dosage Efficiency
Concentrated formula treats up to 40,000 gallons per single gallon container.
System Compatibility
Limited utility for owners operating saltwater filtration systems.
Key Specs
Volume
1 gal.
Manufacturer SKU
ADQ04
Item No.
14805
Recommended Dosage
1 quart per 10,000 gallons
Treatment Capacity
Up to 40,000 gallons
Product Form
Liquid
Pool Surface Compatibility
Plaster and fiberglass
Chemical Purpose
Stain Remover
Features
- Removes tough metal and cobalt stains
- Works on plaster and fiberglass surfaces
- Visible results in 48 hours to 10 days
- Easy-to-apply liquid formula
- Suitable for pools, spas, and fountains
- Effectively combats copper and iron build-up
- Targets black cobalt stains on fiberglass
What customers say
Customers overwhelmingly praise Bio Dex Aquadex 50 Stain Off for its exceptional efficacy against stubborn pool stains, especially those caused by metals like iron and copper. Users frequently report miraculous and instantaneous results, noting its power to lift deep stains where other treatments failed. The product dramatically restores pool appearance, often overnight on plaster surfaces. While performance is high, successful application requires careful adherence to instructions, including temporary chlorine adjustments. Reviewers see Aquadex 50 as a powerful corrective measure, often necessitating ongoing metal sequestration to prevent recurrence. Despite a premium price, the consensus is that it offers excellent value compared to draining or resurfacing a pool, making it a highly recommended solution for severe staining.
Know before you buy
This formula is specifically designed to target metal-based stains, including copper, iron, and black cobalt build-up.
Yes, Aquadex 50 is formulated for use on both plaster and fiberglass surfaces, making it effective for removing stubborn stains on these materials.
You can typically expect to see visible results within 48 hours, though some stains may require up to 10 days to fully clear.
The recommended dosage is 1 quart per 10,000 gallons of water. One 1-gallon container is sufficient to treat a pool up to 40,000 gallons.
No, this product is not compatible with saltwater systems. It is intended for use in standard pools, spas, and fountains.
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