Algaecide | Coral Seas | Yellow Out | 4 lb Bottle | 8 Bottles Per Case

Coral Seas Yellow Out Algaecide is your go-to solution for algae control and water clarity. This potent treatment comes in a 4 lb bottle, with eight bottles per case, making it ideal for regular maintenance or after a spike in growth.

Designed to address core water issues you test for—algae, cloudy water, metals, and scale—Yellow Out lets you respond precisely when your test results indicate a need. Its targeted formula minimizes garden-variety chaos and helps you maintain stable conditions for healthy corals and clear display water.

• Algae control and water clarity — reduces growth and improves visibility.
• Metal and scale management — helps mitigate mineral buildup that foul filtration.
• Test-driven dosing — use as needed based on your water test results.
• Concentrated, case-ready packaging — 4 lb bottle; 8 bottles per case for ongoing maintenance.
• Ideal for hobbyists and professionals — simple, straightforward treatment that fits regular maintenance routines.

Keep your tank or pond sparkling and balanced—add Coral Seas Yellow Out Algaecide to your cart today and experience clearer, healthier water tomorrow.