Water doesn't "like" absorbing oxygen, but having oxygen is beneficial to us; oxygen is added any number of ways depending on your setup, but the contant is that the water needs to be agitated to get oxygen to be absorbed. It can be added when drainage water falls in to the reservoir, when the water exits the tubing (spray, splash,) etc. So, hypothetically, even if there was no drop, oxygen can still be added to the system.Originally Posted by [b
In the case of Bugweed's: There is a section cut out of the large white pot. Having a hole in the side in that type of setup allows for easy addition of water (because water DOES evaporate and is lost from a circulating system, don't underestimate that fact!) And unless the the orange and white pot in Bug's setup were to create an airtight seal (which you'd have to try really hard to do) the water would be oxygenated even without the hole in the side of the container because air can still be exchanged freely. In any event, you want a hole in the side simply for ease of adding water.
That last bit answers your question, right?
BTW, I can take more pictures of my setup at any point, so if you'd like to see a pictorial/video form of something as opposed to textual, let me know. I can be wordy at times and it may expedite the answering of questions.