Minecraft: How to build a Fully Automated Mushroom Farm Tutorial 1.7.2

How to build a fully automated mushroom farm tutorial? Well just do it as i did it in my SMP series. The build was done in Minecraft 1.7.2

Worldfile Download: https://www.mediafire.com/?xih2ejfaxkw4z3r
Cactus Clock Tutorial: http://youtu.be/jgwWHI7UmTk
Pulse Lengthener Tutorial: http://youtu.be/G9RNrbchiG8

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