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Once a pool turns green, cost is usually the first question homeowners have, right after "can this even be fixed." The good news is that green pools are almost always fixable. The cost, though, depends on a few specific factors worth understanding before you get a quote.

What Affects the Cost of Green-to-Blue Cleaning

Severity of the algae bloom. A pool that's just started turning slightly green or hazy is far less involved to treat than one that's been fully green and neglected for weeks. Severity directly affects how much shock treatment, filtration time, and labor is needed.

Pool size. Larger pools require more chemical treatment and longer filtration runtime to fully clear, which affects overall cost.

Underlying equipment condition. If the algae bloom happened partly because of a struggling pump or clogged filter, that equipment issue needs to be addressed as part of the recovery, which adds to the scope (and value) of the service.

How long the pool has been neglected. Algae that's had weeks to establish is more resistant to treatment than a bloom that's only a few days old, sometimes requiring multiple treatment rounds instead of one.

Why "Just Buy More Chlorine" Ends Up Costing More

DIY attempts to fix a green pool with repeated trips to the store for chlorine and algaecide often end up costing more in total than a single professional green-to-blue service, especially when the DIY approach doesn't fully resolve the problem and requires repeated treatments. A proper professional process typically resolves it in one comprehensive visit rather than a drawn-out trial-and-error process.

What's Included in a Professional Green-to-Blue Service

A full-service green pool recovery typically includes shock treatment, thorough brushing to remove algae from surfaces, extended filtration to clear dead algae from the water, and a full chemical rebalance once the water is clear. This comprehensive approach is why professional recovery tends to be more cost-effective than repeated partial DIY attempts, even though it's a larger single expense.

Preventing the Next Green Pool (and the Next Cost)

The real savings comes after the recovery: transitioning to consistent weekly pool maintenance means chemistry gets caught before it drifts far enough for algae to take hold again, avoiding the need for another green-to-blue service down the line.

Getting an Accurate Quote

Because severity varies so much, the most reliable way to know actual cost is a direct evaluation of your specific pool, not a generic estimate. A quick in-person or photo-based assessment gives a much more accurate number than guessing based on pool size alone.