I just finished setting up a homebrew automatic watering system for my bonsai tree. I am now seeing how long one small Arrowhead bottle of water will last. Hopefully it is able to maintain a nice slow constant water supply over a week or week and a half so the tree doesn't die when I go home on leave. The setup is job a bottle hanging upside-down  above the tree with a short length of rope going from a small hole in the bottle cap down to the tree. So far it is going pretty slow but I have to...
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