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yes it does
i saw this and threw together a 5 second one
it pushes the water up then bubbles in the top pot when all the water is in there, i was thinking about a couple ideas, i use a dual line air pump, run a splitter off each line and run 2 pots off the one and then just adjust the air pressure (if you have a pressure dial) and set it to just fill it in the lenght of the timer increment.
if you follow that...
it is a good idea for short term vegging, but if not light proofed it will cause long term problems like aglae and root rot eventually.
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