LIVE Spirulina Culture 100ml – an active starter with 10L nutrient medium. Everything you need to grow fresh Spirulina at home. Shipped from the UK.
£26.99
https://www.agrifarming.in/growing-spirulina
https://www.wikihow.com/Grow-Spirulina-at-Home
https://thepowerofchi777.com/product/nutrient-medium-spirulina-40l/
Live Spirulina Culture is a living, active starter you can use to grow your own fresh spirulina at home. This listing includes 100ml of live Spirulina Platensis culture and 10 litres of nutrient medium — everything you need to begin your first tank.
Spirulina is a type of blue-green algae that has been consumed for centuries. Growing it at home gives you access to fresh, live spirulina without the drying or processing used in commercial powders. It is a rewarding project for anyone interested in self-sufficiency, aquaponics, or producing their own food.
100ml live Spirulina Platensis culture — an active starter culture
10L nutrient medium — the mineral solution that feeds your culture
Growing guidance — instructions for setting up your first tank
Fresh, live product — not dried, not powdered, not processed
Full control — you manage the water, nutrients, and growing conditions
Continuous supply — a healthy tank produces spirulina regularly
Educational — a rewarding project for anyone interested in growing their own food
Low maintenance once established — spirulina is a hardy organism that thrives in warm, alkaline water
Mix the water and nutrient medium according to the quantity you plan to grow. For 10 litres of culture, you need 10 litres of medium. The medium must dissolve completely before you add the spirulina. This can take time — agitation with a pump or a clean stick will speed up the process and prevent the medium from gathering on the surface.
The ideal temperature for spirulina growth is 30–35°C. Below this range, growth slows. Above it, the culture can be damaged. A simple aquarium heater works well for most home setups.
Keep the pH between 10 and 11 for best results. Spirulina can tolerate pH from 8 upwards, but most growers keep it slightly alkaline. If the pH drops too low, the risk of contamination increases. If it rises too high, the chemistry of the medium can change and affect growth. A pH test kit and pH adjuster are useful tools for maintaining this balance.
Salinity should be kept between 15 and 20 PPT (parts per thousand). A refractometer makes this easy to monitor. Correct salinity supports healthy growth and discourages competing organisms.
When the medium is ready — correct temperature, pH, and salinity — pour in the live spirulina culture. Within a few days, you should see the colour deepen and the culture begin to grow.
Light. Spirulina needs light to grow. Natural daylight is ideal, but avoid direct midday sun, which can overheat the tank. A grow light works well in darker rooms or during winter.
Agitation. Spirulina grows best when the water is gently moving. A small air pump or a clean stick used daily will keep the culture circulating and prevent it from settling.
Harvesting. Once the culture is dense and dark green, you can harvest part of it. Strain through a fine cloth or mesh, rinse, and use fresh. Leave enough culture behind to continue growing.
Topping up. As you harvest, replace the removed volume with fresh nutrient medium. This keeps the culture healthy and productive.
Q: What is Live Spirulina Culture?
A: It is a living starter culture of Spirulina Platensis, a type of blue-green algae. You add it to a prepared nutrient medium to grow your own fresh spirulina at home.
Q: What do I receive with this listing?
A: 100ml of live Spirulina Platensis culture and 10 litres of nutrient medium. Growing guidance is included.
Q: How long does the Live Spirulina Culture take to grow?
A: Within a few days you should see the colour deepen. A full tank typically takes 2–4 weeks to reach a harvestable density, depending on light, temperature, and pH.
Q: What temperature does Live Spirulina Culture need?
A: The ideal range is 30–35°C. Below this, growth slows. Above it, the culture can be damaged.
Q: What pH should I maintain?
A: Between 10 and 11 for best results. Spirulina tolerates pH from 8 upwards, but slightly alkaline conditions work best.
Q: What salinity should I use?
A: Between 15 and 20 PPT. A refractometer makes this easy to monitor.
Q: Do I need special equipment?
A: A container or aquarium tank, a thermometer, a pH test kit, and a light source are the basics. A small air pump helps with agitation. A refractometer is useful for salinity but not strictly essential for a first grow.
Q: How much light does spirulina need?
A: Natural daylight is ideal. Avoid direct midday sun. A grow light works well in darker rooms or during winter.
Q: How do I harvest spirulina?
A: Once the culture is dense and dark green, strain part of it through a fine cloth or mesh. Rinse and use fresh. Leave enough behind to continue growing.
Q: Can I grow spirulina indoors?
A: Yes. Spirulina grows well indoors with a light source and a warm room. Many home growers use a simple aquarium setup.
Q: How long does the culture last?
A: The live culture should be added to the prepared medium as soon as possible after arrival. Once growing, a healthy culture can be maintained indefinitely with regular harvesting and topping up.
Q: Is spirulina difficult to grow?
A: It is simpler than many people expect. The main requirements are warmth, light, correct pH, and gentle agitation. Once established, it is a hardy organism.
Q: Can I use tap water?
A: Tap water can be used, but it should be left to stand for 24 hours to allow chlorine to evaporate, or treated with a water conditioner. Chlorine can harm the culture.
Q: What if my culture turns yellow or pale?
A: This usually indicates stress — often from temperature, pH, or light issues. Check each parameter and adjust. A healthy culture is a deep, vibrant green.
Q: Do you ship within the UK?
A: Yes. All orders are shipped from the UK. Please see our shipping policy for delivery times.
Q: How should I store the culture before use?
A: Keep it in a cool place out of direct sunlight and add it to the prepared medium as soon as possible. Do not refrigerate for extended periods.
This is a live culture — it should be added to the prepared medium promptly after arrival
Spirulina requires warm, alkaline water and light to grow
Full growing guidance is included, and further information is available online
If you are new to growing spirulina, start with the 100ml culture and 10L medium, and expand once your tank is established
Disclaimer: This listing is for a live spirulina culture and nutrient medium for home growing. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Always consult your healthcare professional before making changes to your diet.
