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How to Grow Spirulina at Home

Spirulina Fundamentals - What You Should Know Before Growing Spirulina


Light - The Right Light to Grow Spirulina

When spirulina is good and strong the rule of thumb with light is the more the better. Sunlight is best and will provide the most growth for your spirulina. The more surface area of your growing medium that is exposed to sunlight, the better. If you have a lot of sunlight you need to be aware of how much heat is added to your tank during the sunniest times of day.


You may be surprised at how the temperature will rise when you grow Spirulina in the sun. Be sure to monitor this as you are learning to grow your spirulina and as the seasons change. Your spirulina will die at a temp of 102 degrees Fahrenheit (38 degrees Celsius), which is pretty close to the temps they like to grow at. So be careful! Notice above that we said that the more sunlight the better is for when the spirulina are established and strong. When you are first growing your spirulina too much sunshine can hurt them.