Orr Biologicals cultivates high quality phytoplankton for reefers wanting to maintain their own culture. Our live feed contains a mix of different microalgae each selected for their unique nutrient profile.
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
The Three Core 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.
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.
Algal Species Collection
Explore our library of lipid rich microalgae
The Flowchart
Here at Orr Biologicals, we provide guides to grow your own phytoplankton at home. We sell live phytoplankton starter cultures for filter feeding.
Our Mission
© 2026 Orr Biologicals. All rights reserved.