Common Mistakes Leading Spirulina Farmers to Lose 30% Yields Annually

Common Mistakes Leading Spirulina Farmers to Lose 30% Yields Annually

 In the world of spirulina farming, success doesn’t always come easy. Many farms shut down without the proper knowhow. Spirulina farmers, who aim to grow this healthy stuff sustainably, often face unexpected problems. Even when they try their best, they end up making mistakes they don’t even realize. These mistakes can cost them a huge 30% of their yearly yields. But don’t worry, we’re here to help. In this blog, we’ll talk about seven common mistakes that might be holding your spirulina farm back. Once you know what these mistakes are, you can fix them. So, let’s start!

1. Impact of Neglected Nutrient Levels

You see, spirulina is like a plant that needs just the right amount of food to grow well. But sometimes, farmers struggle to give it the proper nutrients. When that happens, your spirulina might not grow as well/healthy as it could.

So, what’s the spirulina farming solution here? Well, it’s not too complicated. You need to make sure your spirulina gets the right nutrients mix, at the right time and at the right dosage. To do that, invest some time in managing those nutrients. Test the water regularly, and if needed, adjust the nutrients. Think of it like taking care of a garden—you want to make sure the soil has the right nutrients for your plants to thrive but in spirulina, it’s all happening on a much faster and microscopic scale.

Most farmers are making the mistake of adding nutrients based on spirulina harvested, this is by far the least useful way to calculate the nutrients to be added. Imagine you are getting a lesser yield, maybe 10 kg instead of the expected 15 kg. This might be happening due to nutrient shortage. As per common knowledge, you add 10 kg worth of nutrients. If you do this you will again gain 10 kg the next day. You should always add nutrients worth the expected yield and not the produced yield. Then how do you calculate the expected yield, consider the weather! And also the OD changes and your pond volume. Make appropriate measurements throughout the day and then add nutrients accordingly.

Consider using organic supplements that are full of good stuff for your spirulina. It’s like giving your spirulina a healthy meal to help it grow strong and happy.

2. Agitation and pond depth

Spirulina doesn’t do well when constantly exposed to strong light, it can cause photo-oxidative death. It also tends to move around in the water column, stagnate at a place, and not utilize the entire pond depth. The nutrients that you add may not mix well in the water and reach spirulina where it is present. They also have light and dark cycles. They generate oxygen continuously which could build up in the culture and stunt its growth or in the worst case kill it entirely. To make sure these don’t happen a well-designed agitator like the one designed by Green Bubble available at is very much essential.

A well-designed agitator is the most important part of the pond infrastructure which can have a crucial impact on the quality, yield, productivity, and reliability of the culture. There are hundreds of designs available online but only a few of them work well.

By having an agitator with high turbulence mixing spreading across the water column but reduced air mixing you can have high culture density that decreases self-shading, improves harvesting density and also lets you fight off contamination easily.

3. The Role of Water Quality

Water quality plays a vital role in spirulina growth. If the water isn’t clean and safe, it can cause problems and slow down your spirulina.

So, what can you do about it? It’s not too complicated. You need to take care of your water. Think of it like keeping your swimming pool clean. To do that, set up a system to manage water quality. Test the water often to make sure the quality is the best and no nutrient build-ups. Make sure your source water is safe and suitable for spirulina. You might also want to use filters to keep the water safe for your spirulina.

Consider collecting rainwater and borewell recharge to always have water for the future and help the environment. And don’t forget to keep an eye on your water quality. Just like you check your car’s oil, check your water to make sure everything’s running smoothly.

4. Temperature Troubles

“Temperature Troubles,” and it’s a bit like a balancing act. Spirulina is like a sensitive plant when it comes to temperature. Too much heat can stress it out and make it grow less.

So, how can you keep your spirulina happy? Finding a spirulina farming solution for temperature control isn’t too tough. To do that, use things like shade nets or structures to protect your spirulina from too much sun and heat. You might also want to use cooling fans or special systems that cool the air. Remember, keeping the temperature right is like giving your spirulina a comfortable home. Let’s make sure they’re cozy and growing well.

5. Harvesting Issues

Let’s talk about a critical part of spirulina farming: harvesting. Harvesting your spirulina at the perfect time, and the correct percentage can make a big difference in how much you get. But many farmers struggle with this and end up losing some of their spirulina.

And you know, it’s not too complicated. You need to keep a close eye on your spirulina density by checking Optical Density and microscopy, picking the correct percentage when it’s at its best or depending on its optical density. It’s a bit like picking ripe fruit from a tree. When your spirulina has grown enough, that’s when you want to harvest it. Never over-harvest or underharvest. If overharvest you could become susceptible to contaminations often. If you underharvest your yield drops and if you reach saturation you could have spirulina die off.

Harvesting is also generally labor-intensive and unreliable so use custom-made spirulina harvesting systems by greenbubble available at for making it efficient, low cost, and reliable.

6. Scaling Smart

Scaling smart, an essential spirulina farming solution means thoughtfully expanding your farm. But you need to be careful because if you grow too quickly without a good plan, it can lead to problems and less spirulina. You need to make a plan for growing.

For your spirulina farm, you should develop a plan that includes making your farm bigger, using resources wisely, being mindful of the environment, including automation, and having the correct lab. When you make your farm bigger, consider doing it step by step, like adding building blocks. Also, use technology that doesn’t use too much energy to save money. And always remember to take care of the environment as you grow. By planning carefully, you can make sure your farm gets bigger and better without any hiccups.

7. Neglected Harvesting Time and nutrient addition

It’s a common mistake that many farmers don’t pay enough attention to. If you pick fruits too early or too late, you don’t get the best yield. It’s similar to spirulina; harvesting at the wrong time can cost you a lot of spirulina.

You need to keep a close watch on your spirulina and gather it when it’s at its fullest. When your spirulina has grown enough, it’s time to harvest. To make harvesting easier, you can use special tools. They help you collect your spirulina in a way that doesn’t waste any and gives you the most. Let’s make sure your harvesting is efficient and productive.


Are you seeing your spirulina farm not doing as well as it could? Many hardworking farmers face this problem. But don’t let these mistakes stop you. The path to success in spirulina farming begins with recognizing the mistakes that might be making you lose 30% of your yields every year.

Now that you have learned about these spirulina farming solutions for managing nutrients, proper lighting, good water quality, temperature control, efficient harvesting, and smart growth, it’s time to do something about it. Visit our website to find solutions and expert advice for your spirulina farm.

7 Common Mistakes That Are Costing Spirulina Farmers 30% Yields Every Year