Size – 16 oz
Shelf Life – 4 years

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SKU: 269B-PC Categories: ,


PONDCARE MICROBIAL ALGAE CLEAN Green Water Biological Inhibitor is the first bacterial algaecide registered with the EPA (Environmental Protection Agency) for ponds. It controls green water algae, also known as chlorella, in ponds and water gardens containing live plants and fish. This algae control solution uses a beneficial bacteria to eliminate organic sludge, debris, and noxious pond odors. PONDCARE MICROBIAL ALGAE CLEAN helps establish and maintain the biological pond filter and improves conditions for fish to receive more oxygen. This algae control solution is exclusively for use in synthetically-lined ornamental ponds and water gardens, where all water is contained without any outflow. This solution is safe for fish and pond plants, as well as surrounding wildlife and pets, when used as directed.

With API POND products, it’s easy to keep a beautiful pond. For over 50 years, API has been creating innovative, research-driven solutions that make it easier to care for your pond. API POND Pond Treatment Supplies are designed to work in conjunction with each other to provide best results to control algae, promote healthy bacterial growth and help control and cure fish diseases and conditions such as ich and fin rot. They work to provide a safe, hospitable environment for fish such as koi, catfish, perch, goldfish and more. With API, you can spend more time admiring your fish, and less time scrubbing your pond. Make sure to use all products as directed in order to ensure the best results.

Controls green water algae in water gardens containing live plants and fish

Eliminates troublesome organic sludge and debris and reduces noxious pond odors

Biologically inhibits green water to keep pond water clean and clear in ornamental ponds and water gardens

Use twice a week for two weeks then once a week to maintain green water algae control

Shelf Life – 4 years

Dosage: Shake Well – Add to the pond, one teaspoon (5 ml) for each 50 gallons or 1/4 cup (60 ml) for each 600 gallons twice a week to maintain control of green water algae (Chlorella).

16oz Bottle Treats up to 4800 US Gallons

Additional information


Bottle / Container Size

Pond Product Type

Pond Water Treatments

Pond Water Treatment Type

EPA Registry Number

EPA #8709-10; EPA Est No. 8709-PA-1; CA Regist #8709-10-AA