Automatic water supply and oxygen for fish tank

Primitive Survival
Hello. Automatic water supply system and oxygen tank for fish tank is our next video. In this video we create a tank oxygen supply system. We use bamboo and water system from the filter tank to form. We will continue to make the next video on primitive technology and wild survival skills. Subscribe to the channel to keep track of the latest videos. Thank you.
channel: https://goo.gl/Xu4A5a
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