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Temperature
Put the algae at room temperature, between 17 and 24 degrees Celsius. They can survive at lower temperatures, but higher temperatures can quickly kill them.
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Light
Place your algae in a spot where it is light during the day and dark at night, but never in direct sunlight. Stay at least 2 meters away from windows and room heaters, where the temperature may fluctuate too much. Just like land plants, algae get their energy from light through a process called photosynthesis.
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Bioluminescence
The algae glow while you shake them, but only after sunset. They have an internal biological clock, which is based on the light-dark rhythm of the past days. They never glow during the day, not even when you look at them in a dark room. Bioluminescence generally starts about 1 hour after sunset.
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Extra nutrients
The algae can survive for a few months in the provided container, as long as you take good care of them. After a while the nutrients run out, so you need to add extra nutrients to keep the algae alive. We recommend adding nutrients every 2 weeks by replacing at least 10% of the volume with new nutrients. The algae nutrients are available in the web store.
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Not for consumption
The algae are intended for decoration and education only. They are not intended for consumption: do not drink or eat the algae. The growth medium consists of sea water with nutrients and is therefore not suited for consumption. The algae themselves are not dangerous (they are not known to be pathogenic, for example).
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