Robarb™
Please select a brand:

Brown and/or Dark Green Spots

Possible Cause Solution Preventative Maintenance

Black algae

Add Pool Specialties Black Robacide as directed, then brush daily until gone. Use Super Blue® clarifier to help remove dead algae.

Use Pool Specialties Robacide 60 weekly to prevent algae growth. Adjust returns to provide better flow over affected area.