If that's a pool for human use, the worst case is a bacterial/fungal infection due to incorrect filtering.
replyA pool filter is for removing physical debris, it's not really for preventing bacterial or fungal infections.
replyI guess what you're talking about is sanitizer, in my case we use chlorine. I test it every time we swim, but I wouldn't have needed an LLM for that. It's very straight forward to maintain pool chlorine, my Dad taught me that when I was 13.