Getting Rid of a DIESEL BUG - Yanmar Engine - Sailboat

Our Yanmar engine was bogging and eventually would die. Found out that the pick up line in the fuel tank was clogged with diesel bug / algae. Austins been adding diesel treatment to the diesel but but it never totally got rid of it so we fully emptied the fuel tank, removed the tank from the boat, put gasoline inside of tank as it is a degreaser and sloshed it around. Drained the tank again and the diesel bug and all algae came out. Austin then poured diesel treatment fluid into the tank and sloshed that around to get rid of the gas contents and any left over diesel bug / sludge. Austin then replaced the fuel water separator filter, changed the fuel filter as well, and reinstalled the fuel tank. We then filled up the tank and added fuel treatment to the new fuel. We are now diesel bug free and the engine is running great.