My son just moved into his new house today. . I meet the pool service today. My son works tons of hours and needs the pool service. He has a salt water gen 30,000 pool. Star rite 400 filters. They were vacuum the pool and that’s it. They were leaving. I ask about the filters? They said $80 more to clean. I pulled them to clean and found this !!!! I told them if this is how they are doing the service don’t come back. My son will talk to them. My question is. The salt water generation. I’m reading it should be cleaned out. Can someone tell me about this. Also the service guys use test strips to check water. Like I said we will call them tomorrow and have a long talk. The pool is gunite