The "ice cube" trick really works.......
I've read for years about putting ice cubes into your black tank to help break loose material stuck on sensors in black tank, but not until yesterday did I ever need to use it. Our black tank sensors have been unreliable for a while now, we have a back flush system and that usually does the trick. This time after an hour of trying...we filled it up 3/4 full and added all the ice we had left in freezer before hitting the road for home. When we got home we flushed and were "empty" once again. Good advice on here.....use it. Thanks
