I apologize for starting a new thread, but this has nothing to do with my other posts. Our spa screen said to clean filter. We just cleaned them a week ago. We pulled them out and all kinds of nasty dirty water came into that filter area. The spa itself is crystal clear. We also saw chunks of something white floating in the spa and we have no clue what they are. Look like pieces of a really thick paper towel or something. Could we have a clog?