Frequently Asked Questions

What type of water is safe to use for my algae?
    • Distilled and bottled water is safe to use! Tap water is not safe because it contains chlorine, which will kill the algae. 
    Why is my algae turning dark green? 
      • This means it's growing! The algae will turn from a pale green to a rich emerald color that is dark enough that you can’t see the bubbles. This is okay. You should still see the bubbles at the surface.
      What do I do if the bubbles stop?
        • As the algae grows it can cling to the rubber valve and cause it to close. If you notice the bubbles have stopped, lift the glass vase up and place back in the base. The force will dislodge any algae and re-open the valve. It is a good idea to do this every few days. If this does not work, pour the algae into a clean bowl or container and thoroughly wash the glass and rubber valve. It is possible that algae is growing inside the valve that needs to be removed.
        How often do I change my algae? 
          • The algae should be changed every 6-8 weeks. After that it starts to run out of food.  You can sign up for our subscription service and we will send you fresh algae every month! You can also re-order algae from our website. The old algae makes an excellent fertilizer for your garden, house plants, or compost pile! 
          Does the aerium need direct sunlight?
              • Nope! The aerium has a built in light that ensures that the algae is continuously removing CO2 and producing oxygen. This makes it perfect for use in an office without windows or a room that doesn't receive natural sunlight. Extra light is good for the aerium though, the more light the aerium receives the faster it will grow (i.e. turn dark green) and the more CO2 it is able to remove.