I am a very beginner and have a question.
I understand you
pump water into the clear bottles, as shown by the yellow lines. When you shut the pump off how does the water go back into the blue thing? Does gravity push it all the way down and up the water level pipe and into the blue thing? (as shown by the red)
Also, can anyone point me into information about how often you change out the water? I assume you add water as it evaporates and the plants absorb it.
One again, very new.