Orr Biologicals — the only phytoplankton supplier that treats your larvae like a scientist would

Premium Live Phytoplankton Cultures

We provide scientifically optimized phytoplankton for filter feeders from copepods to bivalve larvae for maximum growth and health. Cultivated with precision and delivered alive. Orr Biologicals provides the highest quality phytoplankton cultures for reef tanks, aquaculture, research, and zooplankton feeding. From hobbyist to serious aquaculture industry, we provide the best biologicals.

Here at Orr Biologicals, we also offer live microalgae cultures and free learning resources in order to cultivate algae.

From Our Lab

To Your Tank

Choose from a variety of high density, axenic phytoplankton cultures with zero contamination, harvested fresh.

Pure 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

We are student owned; we are sure to always research the topic. We run many experiments behind the scenes from optimizing light spectrums to cell size distribution across blends, showing our commitment to science. We provide you articles to support our conclusions.

Here at Orr Biologicals, we formulate high quality mixtures of marine phytoplankton tailored to copepods and bivalve larvae. These are optimized with laboratory data in our blog posts and other research avenues.

Microalgae are organisms that we believe should be accessible to everybody. We give advice on how to cultivate microalgae including edible ones like Spirulina to regular phytoplankton for your reef.

Our Mission