Hi laura, my question is if this culture is safe to eat (fda?) after harvesting. or is this also for research purpose?

Hi Tim,Spirulina is a safe organism to eat. It is how it is raised and prepared that can become problematic. If it is grown in water with a pH around 10, the probability of problems is lessened. Also cleaning the algae after harvest is advised, and drying helps to kill pathogens. Finally, I must state (as my wife is a lawyer), eating anything you grow at home, be it beans, corn, or spirulina; how you grow it effects the safety of the product. Therefore, we offer no guarantee, warrantee, or prediction of safety if you choose to consume this product or feed it to animals. That said, I have not had any one tell me that they have had any problems.

Spirulina platensis, Spirulina maxima, Spirulina fusiformis? What is it?

To the best of my knowledge they are all the same species. But technically, S. Platenais.

Without adding nutrients, how much can this algae grow in 5 days?

It will contain enough nutrients in the biomass itself (luxury uptake) to likely double. The media it ships with will have enough to more than double as well.

how much solution will this make?

You question is a bit vague I think, but I will answer to the best I can.Infinite if done properly, and continue to build your nutrient solution to feed the algae culture as you harvest.I was able to fill 5 gallons and used less than half of the liter, and it was enough to grow very well. So I will be harvesting and adding more nutrient solution to keep it going. I imagine it's at least enough to start 3x five-gallon tanks, but if you plan on growing it out, you will gain an infinite supply if you take care of it.

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🌿 Grow the future of science—one vibrant culture at a time!

A SPECTRUM OF LIVING COLORS - Explore red, orange, brown, blue-green, and green pigments in one culture.
CLASSROOM READY HASSLE FREE - Pre-selected strains thrive easily in bottles and flasks—no fuss, just science.
ACCELERATE YOUR SCIENCE FAIR WINS - Grow algae rapidly for quick, impressive experimental results.
PROVEN IN SPACE TRUSTED ON EARTH - Used in multiple space missions, bringing cutting-edge science to your projects.
AFFORDABLE ACCESS TO AQUATIC SCIENCE - Designed by educators to make algae experiments easy, repeatable, and budget-friendly.

Algae Research Supply’s Nannochloropsis occulata is a fast-growing, multi-pigment algae culture ideal for educational and scientific use. Cultivated in San Diego labs, this 500mL culture is perfect for school science fairs, experiments, and classrooms, offering easy growth in bottles and flasks. With a proven track record including multiple space missions, it provides an affordable, reliable way to engage students in aquatic science and environmental studies.

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Brand	Algae Research Supply
Manufacturer	Algae Research Supply
Model number	AC
Colour	Nannochloropsis occulata
Number of Memory Sticks	1
Specific Product Use	Educational/Scientific Use
Item model number	AC
Are batteries included?	No

Algae Research Supply Algae Culture Nannochloropsis Occulata, Perfect for School Science Fairs/Projects, Experiments & Classrooms (500mL)

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