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
Buy one of those clear view adapters so you can see what's coming out. Then with the black tank open, have someone flush the toilet inside continuously and see if the water is coming out. It maybe emptying all the way. Doesn't take long. I know our TT has a 32 gallon black rant I believe and it would be done within a minute when full.
