Great second series video of the tank cleaning products.
No surprises in the results for me since having experience in fluid dynamics I knew what the results would be. As for our MH, the factory installed flush system does a fantastic job, but because of the plumbing set-up, I need to extend the time for flushing.
If one wants to be water conserving, install a pump from the gray tank to pump water to a Tornado in the black tank. The end result will be additional cleaning due to the cleaning agents from dish washing and showers being sent to the black tank.
