DQTube 2.0 is a new category of in-tank diesel filter for boats, trucks, generators, and other diesel equipment. Its features a stainless-steel body, and is designed to stay in the diesel tank 24/7/365 to capture and isolate condensation, water, dust, dirt, and other impurities. Like Aquafighter, the DQTube prevents corrosion, diesel bug, and obviates the need for additives. DQTubes are available in various sizes, to suit the size of tank and degree of contamination. DQTubes are more cost-effective than Aquafighters, but they need direct access to the tank, as they are not flexible like Aquafighters.