Algae outbreak guide

Reef tank algae outbreak checklist for Florida hobbyists.

Use this triage page before buying random treatments. Confirm nutrients, restore export, stage water-change supplies, and escalate to a local pro if livestock is declining.

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First 24-hour triage

The safest path is measurement, stability, and export. Avoid aggressive chemical fixes until oxygen, temperature, salinity, and nutrients are understood.

Confirm nutrients before buying fixes

Test nitrate, phosphate, salinity, temperature, and alkalinity so the next purchase matches the actual outbreak driver.

Stabilize export and flow

Clean mechanical filtration, replace saturated media, restore flow around dead spots, and avoid blackout-only shortcuts for coral systems.

Stage cleanup and water-change supplies

Have salt mix, RO/DI filters, carbon, filter socks, algae scrapers, siphon tubing, and spare pump capacity ready before livestock is stressed.

Escalate when livestock is declining

If coral is receding, fish are gasping, or the tank is cloudy, use the local emergency service pages instead of experimenting blindly.

Where to shop

Algae-outbreak supply options

Compare reef-specialty and general retailers for triage supplies. Confirm prices and availability directly before purchasing.

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