API Pondcare Microbial Algae Clean Natural Pond Algae Control

API® Pond Microbial Algae Clean uses a novel approach to algae control — live bacteria that compete with unsightly green water and string algae for nutrients, starving it out naturally. It's an alternative to chemical algaecides: safe for fish, plants, and biological filters while reducing ongoing pond maintenance.

Available in three sizes for any pond:

• 16 oz — small to medium ponds
• 64 oz — mid-size ponds, season-long use
• 1 Gallon — large ponds, best value per ounce

Key Features

• All-natural bacterial algae control
• Reduces green water algae (Chlorella) naturally
• Safe for koi, goldfish, aquatic plants, and wildlife
• Won't harm the biological filter or affect pH
• Effective alternative to chemical algaecides

Directions for Use

Initial treatment: Add 1 teaspoon per 50 gallons (or 0.25 cup per 600 gallons) twice weekly for the first two weeks.

Ongoing maintenance: Add 1 teaspoon per 50 gallons once weekly to maintain control of green water algae.

Best practice: Apply when water temperature is above 50°F. Remove activated carbon from filters during treatment.

Documentation

• API Pond Microbial Algae Clean Safety Data Sheet (PDF)