Black holding tank won't drain past 2/3
After 4 days of camping we have a full holding tank. I open the black valve and hear a rush of fluids for about 1 min, then nothing. Check the tank level inside and it shows 2/3 full. After searchi...
Forum Discussion
Time to but a spinning black water tank cleaner. They go into the toilet with a hose attached. They have a valve to start and stop the water flow. With the drain open allow it to spin until it loosens all the buildup. It's a stinky, messy job, as you need the exhaust fan on and have a bucket ready to put it into when done after shutting it off, as it will be dirty. An alternative is to put in a bag or two of Ice and drive the RV around to get the ice moving to dislodge the debre.
