Professional local pool care
Treat the cause—not just the visible mark
Green, black, or mustard-colored growth is often called algae, but discoloration can also involve metals, scale, leaves, fertilizer, surface wear, or construction material. Identifying the likely cause is essential before applying a treatment.
Algae treatment may require brushing, sanitizer correction, circulation, filter cleaning, and repeated follow-up. Stain treatment can involve careful testing because the wrong product may have no effect or may create a new water-balance issue.
We document where discoloration appears, whether it brushes away, water chemistry, recent events, fill-water source, and surface type. More invasive surface restoration is treated separately from routine water care.
What we review
- Green, mustard, and dark algae observations
- Organic, metal, and scale-related stain questions
- Brushing and circulation plan
- Water testing before specialty treatments
- Recommendations for surface or licensed repair when cleaning is not the solution
Related service topics
Common pool-service questions
How can I tell algae from a stain?
Algae often has texture or responds to brushing and sanitizer, while stains may remain fixed. Location, color, water chemistry, and a small controlled test can help identify the cause.
Will one treatment remove every pool stain?
No. Metals, organics, scale, surface damage, and algae require different approaches. Diagnosis should come before treatment.