Do you have a Letro or Zodiac pool sweep that runs off a booster pump? If so, I would recommend rinsing (I assume you have a multi-port backwash valve). If not, the in-line or in-wall finger screen for the sweep unit will get clogged with debris. If you do not have a return based pool sweep, you are generally fine without rinsing, you just might notice a 1-2 second cloud of debris going out your pool return, most notably a spa feature/overflow line if you have one. 1. Backwash at least once a month or when pressure gets 10 PSI over starting pressure (starting pressure is measured immediately after filter has been cleaned and serviced and DE is added). 2. Or when pressure gets 10 PSI over means if it is getting that pressure sooner than every 1 month. If the pressure never moves, still backwash once a month. If not, you are building a solid membrane of debris on your internal elements that will in up crushing them. 3. Use closest skimmer to equipment to add DE and shut down suction to other skimmers/drains if possible. This safeguards against potentially causing a clog in the line you add DE to and also will alert you if you should not be adding DE to that line if there is restricted, cavitating, or no water flow. 4. Add 1 pound/scoop of DE and then let it go through system. Look for white cloud at pool returns, specifically spa overflow if you have one. If you see white cloud, stop. It is time to have filter cleaned and inspected. If you add more DE you will just have a bigger mess to clean up. 5. Save yourself money long term and have a cleaner year round pool by sticking to minimally a 6 month filter cleaning schedule. *you should be able to see if the pump basket needs cleaned by looking through the lid. If you can’t time for a new lid.