In reference to Bash's response, I fully admit that the cake / crystal build is a hassle. The first thing it did was clog up the floats on the holding tank monitor
. Ultimately, however, it will not only take up valuable space in your holding tank, but it will clog up your discharge lines, creating back pressure, preventing a clean flush.
It's easy enough to remove the discharge lines and beat them against a rock to remove the build up. The holding tank is trickier. How to get the deposits out through the inspection
port without removing the tank? We welded ourselves two tools, each on about 30 inches of square rod. The first is a "chopper" and the other is a "scoop!"
Fresh water isn't an option for us, since we don't have a water maker and live on the mooring
or the hook. So, we're hoping that the vinegar helps delay buildup in the future. Also, we switched to the Fireboy monitor
recommended by Practical Sailor. No float to clog up (works by sensing static pressure against a column of air in a tube).