Originally Posted by pewalker1
I have an Airstream that at this time cannot be moved and need to flush the tank that has been sitting for a while. It is currently attached to a septic system. I was told that you just 'put a hose down the toilet and let it run until it flushes out'. However I am concerned about flooding the interior. Does anyone have experience in this matter and would greatly appreciate feedback as there is no 'man of the house' to help me with this. How do you know when it is flushed and if it is working?! Thank you!
Loosely defined, this will work fine. On the black (toilet) tank. The valve should always be left shut until it is full and time to dump, this prevents solids from accumulating in the tank while the liquids continually run out. When you flush the tank out , i recommend either using a wand designed to spray the sides of the tank, these have a valve on them so you can control the water flow from inside tha bathroom, they are inexpensive, and are available at most rv stores. You will hold the pedal down on the toilet and insert the his or wand and let the water flow. Have a flashlight handy so you can keep an eye on the water level. Once it's about 3/4, shut off the water, and let it sit for a while to loosen any solids, you can then pull the black tank valve and empty the tank. You may want to do this several times to assure it's clean. Another cool little accessory is a clear elbow at the beginning of the sewer hose. It may sound gross, but you can tell when the water is running clear, and the tank is truly clean