Frequently Asked Questions

You don't have to worry about a thing! The spirulina culture will enter a saturation phase on its own. This means that after your vacation, with a little luck, you can harvest again directly. Please only disconnect the farm from the power before your vacation. Only after a long period of up to 3 months will your spirulina slowly start to die. So you can enjoy your vacation completely relaxed and then get straight back to work with your farm!

The Growglas should be thoroughly washed after each harvest. You can either rinse it well by hand or simply put it in the dishwasher – the glass is dishwasher-safe.

Pour approx. 2.4 L of lukewarm tap water into the glass, then add the enclosed starter culture (300 ml) – a total of approx. 2.7 L, no higher. The water must not touch the electronics in the lid.

45 grams is ideal. The most accurate way is to use a scale and 45 grams (if it doesn't completely dissolve, that's fine)

Spirulina is a nutrient-rich microalga that grows in freshwater lakes. It contains up to 60% high-quality protein by dry weight and provides essential amino acids, B vitamins, vitamin K, iron, magnesium, calcium, and the characteristic blue pigment phycocyanin. Due to this nutrient density, spirulina is considered one of the most nutrient-rich foods overall.

As a rule of thumb: Fresh spirulina paste consists of approx. 80–85% water. A portion of 15 grams (approx. 1 tablespoon) of fresh paste therefore corresponds to about 3 grams of dried powder in terms of nutrient content. The decisive difference is not the quantity, but the quality, freshness, and bioavailability of these nutrients.

Dried spirulina in powder or tablet form has a strong, distinctive taste. Fresh spirulina, on the other hand, tastes mild and complements any dish. It also doesn't clump, as is often the case with powder.

Then there are the ecological benefits: with fresh algae from your windowsill, you reduce plastic packaging, significantly shorten transport routes and thus lower CO₂ emissions – and you can do this for a lifetime. Several studies have also shown that dried products often don't contain what's stated on the label – a problem you won't have with your own farm.

Spirulina has been known in scientific circles for years as the superfood of the future. This is not only due to its simple and fast cultivation, but also to its ingredients: Spirulina is one of the most protein-rich organisms with 60–70% protein. In addition, the algae contains numerous essential fatty acids as well as valuable minerals and vitamins.

The secret lies in our special nutrient salt. It creates a very high pH value in the water, meaning a strongly alkaline environment. Spirulina loves this extreme environment and thrives in it. For almost all other types of algae, germs, and harmful bacteria, this environment is too hostile – they cannot survive in it. This way, the culture naturally protects itself and remains pure.

Additionally, the MySpirulina Farm is an almost closed system due to its special lid. It prevents coarse particles or dust from entering the culture. For consistently best quality, we recommend fresh nutrient salt with every new batch and a new starter culture every 3 months. The easiest way to do this is with the Care subscription: nutrient salt and a fresh starter culture are delivered automatically every 3 months, and the subscription can be canceled at any time.

You don't have to worry about anything! The spirulina culture will naturally enter a saturation phase. With a bit of luck, you can harvest again immediately after your holiday. Please just unplug the farm before you go on holiday. Your spirulina will only slowly start to die off after a long period of up to 3 months. You can enjoy your holiday feeling relaxed and then get back to cultivating your farm afterwards.

Technically no: Your MySpirulina Farm is designed as a closed-loop system. With each harvest, you save approximately 250–500 ml of your cultivated culture and use it as a starter for the next batch. Fresh water, a new portion of nutrient salt – and it starts all over again.

For the best spirulina quality, we recommend a fresh restart with a new starter culture every 3 months. Over time, an algal culture naturally loses vitality, and with each cycle, the risk of unwanted contamination increases. A fresh, laboratory-tested starter culture brings your farm back to peak performance. The Care subscription delivers nutrient salt and a fresh starter culture every 3 months and can be canceled at any time.

Yes, plenty of sun is great! How much exactly depends on the growth stage of your spirulina.

At the beginning: If the farm has just been set up and the culture is still thin, you should be a little more sparing with direct sunlight.

Established culture: Once the culture has developed a nice dark green color, it can receive as much sun as possible. A south, east, or west-facing windowsill with an optimally aligned solar panel is ideal.

In winter or on cloudy days: The integrated grow light provides your culture with the appropriate light spectrum. This way, the farm works all year round.

The Growglas should be thoroughly washed after each harvest. You can rinse it well by hand or simply put it in the dishwasher – the glass is dishwasher-safe.

Don't worry – they're harmless. These are diatoms, which are brown algae. They can occur occasionally and are safe. Just harvest them as usual, rinse them briefly, and eat them. Diatoms primarily grow in silicate-containing water. With filtered or distilled water, they appear significantly less often.

The grow light is self-regulating and turns on when the spirulina needs light, depending on the lighting conditions. Your farm runs on a solar panel and battery and also works without a permanently connected cable. In a very bright window, daylight and the solar panel are often sufficient in summer; in winter or in low light, it grows slower.

For the most constant, even harvest, it is best to leave the USB-C cable connected. The grow light will then automatically assist when additional light is needed.

Spirulina thrives best at temperatures between 30 and 37 °C – it grows optimally at around 35 °C. At cooler temperatures, growth slows down, but this is not a problem. Thanks to grow lights and warming LED illumination, the farm produces reliably all year round. In winter, harvesting may simply take longer depending on the location and light conditions.

This is because it's not bubbling at the moment. The bubbles keep the spirulina moving and evenly distributed. As soon as air stops flowing, it accumulates on the surface. Usually, this means the battery is dead or the pump isn't getting power. Just check if everything is connected and charged. As soon as it bubbles again, the spirulina will distribute itself.

The farm does not have a timer, but is guided by daylight. After switching on, it checks after approx. 30 minutes whether it is light or dark. If it detects "light", it runs for 12 hours. After that, it checks again and in summer, if it is light, it continues to run for up to 3 hours. It then remains off for 6 hours – even if a street light or room light creates brightness.

After that, the rhythm begins again. For the first 1-2 days, the grow light can shine continuously while the system adjusts to the lighting conditions. This is normal. Tip: Briefly switch the farm off and on again in the morning so that it immediately gets into the correct rhythm.

With the Care subscription, you get the all-round carefree package: fresh nutrient salt and a fresh spirulina culture to optimize your tank. The Nutrient Salt Only subscription is ideal if your current culture is already stable, vital, and healthy, and you simply want to refill the feed.

It's not strictly necessary – your existing culture could theoretically survive for a long time. However, a regular update does it a lot of good. The fresh culture from the Care subscription revitalizes your spirulina cultivation, keeps it stable, and provides you with the best yields.

Shipping occurs every three months. The first delivery will be dispatched immediately after your order. Subsequent deliveries will be sent exactly every 3 months from your original order date.

No. Shipping is permanently free with the Care subscription. You only pay the subscription price of €34.95 every 3 months.

No problem. If a package falls exactly within your vacation period, please write to us in advance at support@my-spirulina.de. We can flexibly postpone the shipping of your next delivery so that your package only arrives when you are back home.

Completely flexible and without hidden deadlines. You can cancel your subscription at any time with just a few clicks directly in your customer account.

1. Prepare the grow jar: Rinse the grow jar thoroughly with hot water.
2. Add nutrient salt: Add 45 g of nutrient salt to the grow jar.
3. Fill with water: Add a maximum of 2.4 L of lukewarm tap water and stir well. The nutrient salt does not need to dissolve completely.
4. Add Spirulina culture: Add the included starter culture (300 ml). This makes a total of approx. 2.7 L – up to the red line, no higher.
5. Attach hose and put on lid: Attach the hose to the connection in the middle of the lid. There is no separate air stone with the new design. Carefully place the lid on top, do not screw.
6. Place the farm: Place the farm in a sunny spot, for example, a south, east, or west-facing windowsill, and orient the solar panel towards the light.
7. Power supply and battery: Press the power button and connect the farm with a standard USB-C cable. When plugged in, the indicator will flash green 5 times. After that, it will light up red as long as the battery is charging. For a consistent harvest, it is best to leave the cable connected.

Note on operation: The farm regulates light and pump depending on daylight and at set intervals. The pump does not run continuously. In the first 1-2 days, the LEDs may glow continuously while the farm calibrates; after that, they will turn off at night.

This is completely normal:

• Plug in the cable: 5 green flashes mean the cable has been recognized.
• After that, the indicator light glows red as long as the Farm is charging.
• Red stays on until the battery is full – then the light turns off by itself.
• Red without the cable means: battery below 20%, please charge.
• If nothing happens when you plug it in, the battery is deeply discharged. In that case, charge it for a full 12 hours with the cable.

In short: No, but it's worth it. Your farm runs on solar panels and a battery. In a very bright window, daylight and solar panels are often sufficient in summer. In winter or in low light, the spirulina grows slower. For the most consistent harvest possible, we recommend leaving the USB-C cable connected – the grow light then automatically supports it. A USB-C cable is not included for sustainability reasons.

Pour approx. 2.4 L of lukewarm tap water into the glass, then add the included starter culture (300 ml) – for a total of approx. 2.7 L, no higher. The water must not touch the electronics in the lid.

No. The Aqua Stone was only available in the old farm; you no longer need it in the new design. However, the hose is still connected as described in the instructions. So, nothing is missing.

No – consciously not, for sustainability reasons. You most likely already have a USB-C cable at home, and another one would be unnecessary waste. Any commercially available USB-C cable will work.

45 grams is ideal. The most accurate way to measure is with a scale. If the nutrient salt does not dissolve completely, that's not a problem.

The right time: After about 10–14 days, the spirulina is ready for harvest. The exact duration depends on the light – faster in summer, longer in winter. For maximum yield, the culture should have reached a rich dark green color.

1. Secure culture: Pour approx. 250–500 ml of the culture into a clean glass. This is your starter culture for the next round.
2. Filter: Remove the lid, place the harvesting aid with the filter in the sink, and slowly pour the remaining culture through the filter.
3. Enjoy and store: A creamy, dark green paste remains in the filter. It will keep for up to 7 days in the refrigerator. If it smells musty or turns bluish, please do not use it. Freezing is possible; after thawing, consume within 24 hours. Heating is not recommended.
4. Discard residue: You can discard the filtered residual liquid.
5. Restart: Thoroughly clean the grow glass and restart the farm with 250–500 ml of secured culture, approx. 2.2 L of water, and 45 g of nutrient salt.

Freshly harvested spirulina lasts approximately 7 to 8 days in the refrigerator. It's best to store it directly in the provided spirulina jar or another tightly sealed container.

Tip for extended shelf life: You can easily freeze fresh spirulina.

Freshness test: Trust your nose. If the spirulina smells unpleasant, you should no longer consume it.

Yes. In addition to Germany, we also deliver to Austria, Switzerland, and other EU countries.

• Germany: €4.99 shipping; free for orders over €100.
• Austria: €13.99 flat-rate shipping.
• Switzerland: €24.99 shipping.
• Other EU countries: Exact shipping costs are shown at checkout.

Note for Switzerland: Shipping is carried out using the DAP procedure. Goods are shipped without German VAT. Upon import, Swiss VAT and, if applicable, customs and processing fees will be incurred. These are paid directly to the shipping company or customs upon delivery.