I'm running my Yong Heng with the original supplied inline filter and then I have a 3 stage filter I bought between that one and the fill tank. Is that overkill or putting too much stress on the pump? After 10 minutes the temp on the gauge stabilized at 54.0C to 54.2C. I have about 10 gallons of water and a fan running on the pump. The first inline filter is warm (not uncomfortably hot) to the touch, the second one has a slight temperature increase but not very much. I also have the second filter higher than the first.