Last updated on July 3rd, 2023
Curious about how much Spirulina you could be producing? Try our free Spirulina Harvesting Calculator!
With just a small space in your garden or windowsill, you can grow the most nutritious food on earth. Say goodbye to worrying about protein, vitamins, minerals, and amino acids – Spirulina has it all!
By providing the ideal conditions (ph 10.5, temp 32 Cel, 70% light, and a proper nutrient balance), Spirulina can multiply by 25% every day. It won’t be long before you can start harvesting from your pool. But how much can you actually harvest?
Simply input the dimensions of your pool into our calculator to find out how much wet biomass or dry Spirulina powder you can produce daily!
Ready to start growing your spirulina business?
Hi Natan,
Same question as asked above, looking feedback/information from you please.
How to check the quality of our produce in wet and dry conditions. Any lab test you would suggest. Is there any benchmark upto which your product will last?
Hi, the standart way is to get a COA which tests for heavy metals and microbial contaminants, and lists the percentage of the main nutrients (protein, vitamin A etc.)
If stored properly, the dry products can usually last up to 2 years.
Great site.
Do you have any data on the difference in yield if one inject CO2 gas into the growth medium?
Compared to the normal yield.
I read somewhere that it takes 1.33% Co2 to make 1 unit of Spirulina. Is that true?
I read somewhere,
the CO2 fixation ability depends on Spirulina strain we select. Spirulina strain 220 has more ability to fix CO2 under regular conditions.
Highest CO2 fixation rate 414.15 mg/L per day by Strain 220.
Hi Nayan that’s good piece of information. How to check the quality of our produce in wet and dry conditions. Any lab test you would suggest. Is there any benchmark upto which your product will last?
I am interested in starting this project. I would like to start small until I have the knowledge needed to grow more. For a starter setup, how many gallon tank would be required to produce sufficient Spirulina for 2 people per day?
How necessary is RODI water for use with the Zarouk’s medium?
Can I use tap water without RODI?
Our water here is hard water. Does that make a difference?
what is standard Water quality required to grow spirulina…. whtether it can Grow using Salt water or Sea water
On the most basic level, the water for growing spirulina should be drinkable. Our book Algae Bloom has some details about how to check the water quality. As for seawater, that is a question that scientist are seeking to answer. here’s a recent study https://www.sciencedirect.com/science/article/abs/pii/S1369703X20303697
Hello Natan, I’m planning to grow spirolina in India. But during winters the temperature here drops to around 15 °C. It would be great help to know, what could be best energy efficient way to manage temperature of the pond?
A polytunnel or greenhouse that you can open in the summer and close in the winter would probably be the most energy efficient in the long run and will prevent other problems like flooding and contamination. If that isn’t enough, consider installing an AC or water heaters where you can control the temperature.
thank you very useful.
Can we cultivate Spirulina where the temperature of between 40 – 49 degree centigrade?
Hi Kumari, That’s very high and likely to kill your culture. The ideal temperature of the water is between 28-32 degrees Celsius. You’ll probably need some shading and cooling in place.
Hi Nathan,
One of my uncle wants to start spirulina cultivation. What will you suggest to go for a plastic tank or cement tanks? And also will you suggest to sell dry yield or wet? Which will be more profitable for business. please reply. Looking forward for your help.
Hello Anand, it is not recommended to use concrete, as it tends to erode into the water, creating nutrient imbalances and multiple other problems. As for selling dry or wet produce, its really up to you. Generally, dry spirulina keeps for longer and is, therefore, easier to ship globally, while fresh/frozen spirulina is more suited for local trade. Find more info on this page: https://grow-organic-spirulina.com/build-your-own-spirulina-production-farm-a-step-by-step-algae-cultivation-guide/
hellow my friend, im a chilean spirulin cultivator. I need to know where you get this information of the growth rate in open pounds.
Best regards!
This information is an average of results collected from an independent survey across our community of global spirulina growers.
Like any cultured living organism, you will end up with waste released into the water. If the water is kept being utilized round the clock with 25% harvested per day, won’t the released byproduct accumulation becomes toxic to the growing culture.
Regards
Dear Walid, it depends on the composition of the compensation feed as well as the accuracy and know-how of the grower. It is customary to replace the medium water and reset the pools every now and then, to prevent mineral saturation.
Thank you for this website, it has helped a lot. I have one question, how often can spirulina be harvested. Can it be done every day of the month?
Many sources say its every 6 days. If that is the case, then how will the above calculations work?
That depends on the concentration and the conditions you provide to the algae. In optimum conditions, you can harvest about 25% of your culture volume every 2-3 days.
Enter your comment.
advise me on if I want to do it in plastic tanks will it work & if it works how can I calculate
Hi Nathan,
I was going through your calculations and of the sources I have read mention 6-20 grams/m^2/day. Square meters per day – yet here you have the production per meter cube. Could kindly share the sources where yields are calculated per m^3?
Calculator includes a pool’s height factor – which means the actual level of water (culture) in cm. normally a pool will be about 25 – 30 cm.
what is standard Water quality required to grow spirulina…. whtether it can Grow using Salt water or Sea water
Normal potable filtered water without chlorine.
Chlorine kills spirulina.
Incase Chlorine present, dechlorinate and use.
Informative site. Quite helpful
how many days once we have to change the water??
Hi Nischitha, as long as the culture is looking green and healthy, and the coils look spiral under microscope, there’s no need to replace the water.
thanks towards this countless illuminating website, obstruct up the momentous work
Great site, with insight full detailed information for all of us.. Thank you for sharing .