I will be moving soon and breaking down a tank is a pain in the butt. I have used the back yard hose for years to top off and now I am dealing with it. Since I am moveing I am up grading my tank to a 200+ gallon aquarium. The question is.... If I dry out the sand and rock will the phosphates go away? Oh also you should know that I now have an RODI from BRS. No more back yard hose and I will also be setting up an auto top off.