How many tanks do I need to run through AquaTru before using the pH + Mineral Boost Alkaline VOC filter? July 13, 2021 19:05 Updated Follow After installing the pH + Mineral Boost Alkaline VOC filter, it is recommended to flush your AquaTru purifier with at least 4 tanks of water before consumption. Have more questions? Submit a request Related articles Does the filtered water taste from the pH + Mineral Boost Alkaline VOC filter taste different than regular AquaTru water? How long do the filters last in AquaTru countertop purifiers? What kind of minerals does the pH + Mineral Boost Alkaline VOC Filter add into the water? Can AquaTru filter hard water? How much do the filters cost?