Hi everyone. I just set up my 110 gallon tank and was worried about water coming back down the air tubes to the air pump. I've seen those small things that connect to both sides of the air tube and it's supposed to only let air go one way and doesn't let water go past it. I hope I wasn't too confusing. I want to know if anyone has used it, how did it go, or what other things I can do to prevent the water from going to my air pump. Don't want to come home after a power outage and have water all over the electrical equipment. Thanks, Ed.