Pool stain removal
Brown, green or crusty white marks that brushing won't touch? Most pool stains can be lightened or removed once you know what caused them. We figure that out first, then treat them.
What kind of stain is it?
The right treatment depends on the cause, so identifying the stain comes first.
Organic stains
Green, brown or tea-colored marks from leaves, berries, pollen or algae. Common under trees and on steps.
Metal stains
Rust-brown, blue-green, gray or purple discoloration from iron, copper or manganese, often from fill water, worn equipment or some algaecides.
Scale
White or gray crusty buildup, especially at the waterline and on salt pools, caused by high calcium and pH.
Surface wear
Some discoloration is aging or damaged plaster, not a stain. We'll tell you if that's the case, so you don't pay for treatments that won't help.
How we remove stains
- Identify: we look at the color, location and pattern, test the water, and spot-test the stain.
- Treat: we use the right approach for that stain type. That might be a targeted treatment for organic stains, a stain treatment for metal stains, or a scale treatment, used in a way that's safe for your finish.
- Rebalance: we bring the water chemistry back into range after treatment.
- Prevent: we recommend what will help keep stains from coming back, like metal control, steady water balance or regular brushing.
Many stains can be treated without draining the pool. Draining in Florida carries real risk to the pool shell, so we avoid it unless it's truly needed. See our chlorine wash guide for why.
Setting expectations
Most stains improve a lot with the right treatment, but results depend on the stain type, how long it's been there, and the condition and age of your finish. Some deep or long-standing stains lighten rather than disappear completely. We'll tell you what's realistic before you commit.
Stain removal questions
Do you have to drain my pool to remove stains?
Usually not. Most stain treatments are done with the pool full. We avoid draining unless it's truly needed.
Can you remove stains from pebble or tile finishes?
Yes. We treat plaster, pebble and tile surfaces, using methods that are safe for each finish.
Why did my pool stain after I added a new chemical?
Some products, including certain algaecides and shock treatments, can react with metals in the water and cause staining. Tell us what was added and we'll take it into account.
Ready to enjoy a pool you don't have to think about?
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