Bio-Dex Protect-All Supreme Pool Stain & Scale Remover – 32 oz | PAO32

Bio-Dex Protect-All Supreme Pool Stain & Scale Remover – 32 oz | PAO32

Marsoni

M251S

$39.99

Get it in 3 business days with 1 day shipping. Friday, May 29

Bio-Dex Protect-All Supreme Pool Stain & Scale Remover – 32 oz | PAO32Bio Dex Protect All Supreme Stain and Scale Remover PAO32 is a high concentration formula engineered to dissolve persistent stains and heavy scale accumulation in pools, spas, and ornamental water features. It targets calcium deposits, iron discoloration, rust, and various organic blemishes, making it an outstanding solution for regions with hard water conditions. Noticeable improvement typically appears within 48 hours, and the product is perfectly

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MUCH better than the cheap plastic OEM part, Just a reminder though, these thread into an aluminum block so be very careful to start them finger tight first, then evenly tighten both bolts to push the fitting into the chamber. If you don't, it will slightly misalign and you run the risk of stripping the threads. The one comes with the replacement o ring, and be sure to get some antifreeze on that seal prior to attempting to push it into the chamber. IT IS A TIGHT FIT, but that's what you want, so just be careful. You might also want an extra hose clamp on hand, as the one that came with this began to bend as it got tight, so I had to replace it for peace of mind. Overall, great product though.

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Reviewed in the United States on January 9, 2026