[QUOTE=etothepii;26589]We just returned from a 9 night camping trip, covering 4 camp grounds in Ohio and Michigan -- our second camping trip. Here's a little of what came up along the way ..
Black water gauge inaccurate. Fluctuating between empty and full without much rhyme or reason. I know leveling matters, and some of the problem was from the previously mentioned tire issues can change the level enough to throw off the gauges, but even after being fixed, the black water tank was still inconsistent.
Agree with others, black tank gauges are usually always inaccurate. Several solutions have been tried: Fill tank completly up before empty. Never travel with anything in black tank. After tank emptied, put some water in tank before leaving campground. Add bag of ice cubes also. Put water softner or powdered clothes wash detergent in tank, get some kind of tank flusher. Have tried several and none seem to work all the time
. Best is to have an onboard tank flusher which comes with your rig (not all manufacturers put them on).