Learned a valuable lesson today. I have noticed my air pump making noises in the past but I just blew it off and said it would be fine. When I checked this morning I noticed something wasn't quite right with the setup. It was too quiet so I checked under the lid and saw no bubbles then I grabbed my air pump which wasn't working at all. So I took it apart and noticed it was slightly wet inside and damaged the pump. I have the pump sitting out to dry but I don't think it will help it any and I will have to buy another one soon but for now I have my two small fish aquarium air pumps hooked up temporarily. They will keep the plants alive but not give them as much DO as I would like to have. The lesson that was learned is that I will not have my air pump sitting lower than the plants again because it will cause water to back fill into the pump which will damage it. Yes this is obvious and I should have known better than to sit it lower but the pump vibrates and I had it sitting on the ground on a pillow to absorb the vibrations. I will figure out a new location for the new pump once I order a new one. Ugh! Lesson learned the hard way!