Automatic Fertilizer Dosing (Under $15)
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Old 12-10-2012, 04:35 AM   #1
Raithan Ellis
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Default Automatic Fertilizer Dosing (Under $15)

For fairly apparent reasons, the soap bottle may not be the best option... that said, I'm sure you can easily find another option.

http://hackaday.com/2011/01/21/ferti...ener-hardware/
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