Spirulina Feed Calculators

Take the guesswork out of spirulina cultivation!

Our online spirulina feed calculators are designed to quickly estimate the amount and ratio of the nutrients that growers need to add to their spirulina culture during the growing stage and after each harvest.

Why should I use a feed calculator?

Disproportionate feeding or overfeeding can kill your spirulina in a manner of hours, but if your water level keeps changing, or the weight of your harvest fluctuates, sticking to the recipe can be difficult.

That’s where the feed calculators come in handy. All you need to do is select the amount of water in your tank, or the weight of your last harvest, and you’ll get a revised recipe showing you exactly how much of each nutrient you need to add.

The feed calculators are based on popular and proven spirulina culturing recipes like Zarrouk, Delhi Mix, NASA and others.

Whether you’re a beginner or an experienced grower, the spirulina feed calculators are easy to use and ensure that your spirulina gets the right  amount of nutrients it needs in order to thrive, at every step of the process.

Which Feed Calculator Should I Choose?

• If you’re following the organic method described in our guidebook, we recommend to start with the Be the Medicine calculator.
• For commercial feeding, use the Delhi Mix or the Advanced Growers feed calculators.
• For science projects and lab experimentation, try NASA’s original Zarrouk formula.
• To access all 4 calculators, choose our Spirulina Network Membership Plan and gain exclusive member discounts + extras.