Orr Biologicals cultivates high quality phytoplankton to feed filter feeders.
We provide high quality starter algae culture kits to grow phytoplankton. Our feed can grow corals, copepods, clams, oysters, mussels and other filter feeders.

Premium Live Algae Cultures for Filter Feeders

algae near light
algae near light

In the wild, a bivalve larva’s life is a lottery. They drift through vast oceans in a planktonic state, hoping to encounter a "patch" of nutrient-dense phytoplankton. Most starve before they ever find one.

At Orr Biologicals, we don't believe in luck. Our feed provides the exact cellular density found in the world’s most productive estuaries. Use the calculator below to ensure your filter feeders aren't just surviving, but thriving with the nutrition of the elite one percent.

The Three Core Biological Pillars

Choose from a variety of high density, axenic phytoplankton cultures with zero contamination, harvested fresh. Starter cultures can be used for feeding aquariums.

Pure and Live Cultures

Tailored Strains

Utilize microalgae blends and monocultures to cover the full nutritional profile of your organisms.

Phytoplankton blends are shipped separately in order to prevent interspecies competition, and organized into ratios to ensure complete lipid profiles.

Optimized Ratios

Nutritionally Optimal Phytoplankton

At Orr Biologicals, our phytoplankton blends and live cultures are designed to address all the nutritional requirements of a variety of filter feeders.

- High EPA, ARA, and DHA lipid profiles

- Protein, Amino Acids, Carbohydrates for energy

Copepods for example can consume a simple blend of nannochloropsis and isochrysis and be perfectly fine! However, we go further with sensitive filter feeders like Tridacnid clams, which have complex fatty acid and sterol requirements. In sensitive organisms like these, we specialize in delivering multiple phytoplankton strains while alive to prevent malnutrition. We grow our cultures clean, so your filter feeders do not need to worry about being wiped out in 48 hours by a Vibrio bacteria infection.

The Flowchart