CLOROX Pool&Spa XTRABLUE Plus Algaecide — 40 oz Non‑Foaming, Non‑Staining Fast Algae Treatment

Clorox Pool&Spa XTRABLUE Plus is a 40‑ounce, non‑foaming algaecide that kills and helps prevent green, mustard, and black pool algae—clearing algae in about 24 hours when used as directed.

Keep your pool clear and swim-ready with a concentrated algaecide formulated for routine prevention and rapid treatment of existing outbreaks. XTRABLUE Plus works in all pool types, including salt systems, and features a patented non‑staining formula so you can treat algae without worrying about discoloration or excessive foaming. For best results, apply while water is circulating and follow label directions for dosage and safety.

How quickly will XTRABLUE Plus clear visible algae?

When applied at the recommended dosage and with proper circulation, noticeable reduction in algae is often seen within 24 hours. Complete clearing depends on algae type and pool conditions; heavy infestations may need repeat treatment and brushing.

• Typical visible improvement within 24 hours for green and mustard algae
• More persistent black or root‑attached algae may require additional treatment and mechanical brushing
• Keep filtration running during and after application for optimal distribution

Can I use this algaecide in saltwater and vinyl pools?

Yes—XTRABLUE Plus is designed for use across all common pool types, including saltwater systems and vinyl linings. Its non‑staining formula minimizes risk of discoloration when used as directed, but always follow label precautions for sensitive surfaces.

• Safe for plaster, concrete, fiberglass, vinyl, and salt pools
• Patented non‑staining formulation for broader surface compatibility
• Test and adjust chemistry with the Clorox Pool App before treatment

How should I apply XTRABLUE Plus for best results?

Apply the product directly into the pool while the pump and filter are operating to ensure even dispersion. For preventive doses, use weekly in algae‑prone pools; for active blooms, follow label directions and consider brushing surfaces to dislodge stubborn growth.

• Pour around pool perimeter with pump running to distribute quickly
• Brush affected areas for stuck or black algae, then retreat if needed
• Consult the Clorox Pool App for precise dosage based on gallonage

What routine steps help prevent algae after treatment?

Combine consistent sanitizer levels, good filtration, and weekly use of an algaecide in high‑risk conditions such as warm weather or after heavy pool use. Regular vacuuming and maintaining proper pH and chlorine reduce the chance of algae returning.

• Maintain recommended sanitizer and pH ranges for your pool type
• Run filter adequate hours per day for your pool size and climate
• Use XTRABLUE Plus weekly in summer or after storms as a preventive measure

Who is this for: Homeowners and pool professionals who need a reliable, quick‑acting algaecide suited to a variety of pools. XTRABLUE Plus is aimed at people who want an all‑in‑one solution to knock out visible algae fast, maintain clear water through the swim season, and use a formulation that won’t foam or stain when applied correctly. If your pool is prone to recurring algae growth or you prefer a preventative weekly treatment, this product is a practical addition to regular pool care supplies.