Hmm never thought about the airpump letting watter out. If it were to fail. I accidentally let it fill with water when I first started it and I didnt see any drip out. Ill have to check out the design of the eco 1 and see if it does fail if it can let it out.
Edit. Looks like there is a diaphram that will block any liquids from escaping if the motor fails. However if the diaphragm were to disintegrate somehow I could see it happening. Either way ill have this girl in a tub or outside when its running to make sure if it is to overflow or I spill water or something happens that it is contained.
How are you guys taking care of leaks on the hand fit stuff? I have a couple spots that still drip after I tryed to clean up the ends and get them flat smooth. If I glue these spots together it will make it a little harder to clean
I took the route of drilling 1/16 in. holes, as I did not know where to get it cut at 250 micron such as Microbeman stated.