Sorry for the delay responding. It sounds like you have the proper water-flow adjustment due to the amount of distilled energized water you're producing per hour. Ideally, you want just enough water to keep the tank filled just to the over-flow. The lower the flow, the better. This allows more times for the water to be transferred back and forth between the tanks - when this takes place, it is removing "ALL DISEASE MARKERS" in the water (Which a reverse osmosis unit cannot possible do). This is what makes the patented John Ellis machines unlike any other distiller or water purifiers on the market. It is very important to clean your machine often. Not just the tank, but inside the heater module as well. This requires a little mechanical expertise because you have to remove the band-clamp and carefully separate the rubber seal from the sides of the round tank. Never use anything abrasive. Cleaning instructions included say adding distilled vinegar to clean the tank(s), is the appropriate way to loosen all particulates and contaminants the machine has removed from your water. Cleaning the UV Bulb with vinegar is also recommended. Re-assembling the band-clamp may require an extra set of hands to be sure you've replaced it properly. As an authorized dealer/distributor for Mr. John Ellis, you can call me directly for any assistance you may need. Angelic Pure Water, LLC. (775)990-9845