Bests & Worsts Reviews from Amazon

Upon first hooking up this tool I turned on the water valve on it to see how it functioned. It was impressive. I had a clogged up tank on my 32 foot Keystone Sprinter travel trailer. This was due to me not using the “proper toilet paper”. My black water tank level indicator showed me that the level would never empty below 2/3. I drained the tank outside as much as possible, (2/3), and left the emptying valve open. I them ran my water hose with this tool attatched to the end of it inside my camper. I depressed the foot valve and inserted it into the tank. I sprayed the upper portion of the tank to clean it as much as possible. When it began to fill up I allowed the tool to go down into the tank below the water line, creating a vortex of water. I could hear the swivel end spinning like a propeller. When the tank was completely full, I turned off the water supply valve located on the tool. I listened to the tank begin to slowly empty. Then, I heard it suddenly GUSH out of the drain! PROBLEM SOLVED!!! I allowed the tank to empty. I began to wash the inside of the tank with the tool, and did this for about 10 minutes. I shut off the outside drain and began to clean the tank inside again. When the water filled up the truck tank this time it was with CLEAR WATER! I drained the tank again & checked my gauge. COMPLETELY EMPTY!!!! This is one fine product.