Were you have a problem dumping before... Is that why you are using the Tornado?
We have a santi flush on our RV. I used it when we dumped the first time. It took me a while to dump the tank for sure. I kept on having an issue with toilet paper not going down the bottom of the toilet. It appears to have some type of plastic barrier preventing the toilet paper to go straight into the tank. I made a little tool to help the toilet paper enter the tank.
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