maynard

Our Jacuzzi Ventura hot tub is older but I have been able to maintain it to like new. The one nagging problem I have is when I first fill the tub. For the next month we have a white powder that settles on the bottom areas of the tub. I use a shop vac. to remove the larger piles then circulate the water through the filters. I remove and hose the filters daily and get lots of the white powder out. It has no smell or taste. Once it is cleaned out all is fine until the next drain and re-fill. We do shut down and winterize the tub annually. Could this be erosion from the inside of the PVC plumbing? We use the Baqua Spa system for water purity.