We had a new Sta-Rite System 3 De Filter, 53 Sq.ft, and backwash valve installed by a company. They said to not run the filter and they would return the next day to see if there were no leaks. After noticing that the pool filter was running the next day, I assumed that he had returned an everything was fine. The psi was 10. The pool has a little algae; therefore, we shocked it and let it run. Timeline - Monday (insall) Tuesday (pool was running) Thrusday (shocked pool for algae) Sat(noticed filter was leaking and psi was at 20. Since the filter was leaking around the middle, we took filter apart and noticed that no DE had been added. Filter was clogged with algae. We washed the filter elements, restarted pool - the psi was 17. We added the DE and the psi was 18.
Question: Do we possibly have filters that need to be chemically cleaned because there was algae and it ran for 5 days without DE? Should the filters need to be replaced? Should we demand anything from the repair company?