The air vents in itself is fine. The LED's will now function properly for over a year. The fixing of the outflow was not thought through properly. I want with the built-in LED's illuminate the outflowing air bubbles. Since the LED's almost only just radiate light from it is not easy to fix the thing properly. For this purpose it would be necessary to rid the aquarium bottom of gravel around the vents to attach to the glass. You have to make do with a weight, or partially dig into the gravel to reach the vent to the desired result.
