Also make sure you flush the tank really good with the specialist ff system. I usually flush each of my black tanks 3 times. When you use the sprayer system close the black tank dump valve and let some water get in there in case there are some stragglers. After you get a clean rinse then finish it off with the grey water to flush the hose. I always also use the sprayer system to put some water in the black tank and then add some enzymes to that from the toilet. Lastly, always check to make sure the dump valves (gate valves) are closed before removing the cap. The fan tip is a good one! ☝️
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