Mustard algae is the trickster of pool problems: a yellow-brown dust on walls and floors that wipes away with a touch, then reappears within days. It resists normal chlorine levels, clings to anything it touches, and reinfects the pool from your own equipment. We treat the whole system, not just the water. Call (941) 555-0142.
The tell is behavior, not color. Dirt and pollen settle on the floor; mustard algae clings to walls, especially shady ones, and brushes off in a smoky cloud before resettling. It survives shock that would kill green algae, and it hitchhikes — on brushes, floats, cleaner parts, and swimsuits — which is how it keeps coming back after “successful” treatment. If you’ve shocked twice and the yellow dust returned both times, stop buying chemicals and treat it properly once.
We brush every surface to break the algae loose, then treat with elevated chlorine plus an algaecide made for mustard strains — regular doses won’t do it.
The part most treatments skip: everything that touches the water gets sanitized.
Brushes, poles, cleaner, baskets, floats — mustard algae survives on all of them and reseeds the pool.
The filter gets a full clean, chemistry gets rebalanced, and we confirm on follow-up that nothing returned.
Photos throughout.
Cost depends on pool size and how established the algae is — one wall versus every surface. Quotes are free from photos, usually same day, with follow-up included in the number. If your gear needs replacing rather than sanitizing — a far-gone cleaner filter bag, say — we’ll tell you rather than treat around it.
Break the cycle in one proper treatment. Call (941) 555-0142 or send photos below. Learn more about how we work, what we charge, and who we are on our homepage.
Most jobs are quoted free from photos — usually the same day.
Homeowners across Sarasota and Manatee counties already trust us with their pools. Tell us about yours and we will get back the same day with an exact, no-pressure quote.
Call Us (941) 555-0142Usually quoted the same day from a few photos. No contracts, no hard sell.
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Kingfisher Pool Care