In the bog O2 is carried in with the water table. Just because plants make O2 does not mean they dont need O2 as well. Oxygen is created as a result of photosynthesis, but the plant cells still must metabolize the food its created just like any other cell.Originally Posted by [b
In answer to the question, VFT do not like undrained containers. A sealed fishbowl would be a bad idea for a pot IMO.