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mp4 | mov | hd-appletv| 3gp |3g2 | itunes | blip | youtube | pdfThis weekend, watch the video, download the pdf and create a closed system to live on your windowsill! If you have an aquarium, you probably have all the chemicals you need for this. If you have to buy new chemicals, you’ll have enough for hundreds of biospheres! – Subscribe Link Weekend Projects is sponsored by Microchip Technology. Check out their seminars and the Microchip Masters Conference.

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