I am a brand new owner of an in ground pool. My husband wants to swim as soon as possible. I just want to make sure it's ok for him to get in. It is an SWG system, so I'm trying to find the right percentage. Anyways, Saturday the FC was 3, yesterday it was 7 and today it's 10. The CYA is 70. So is the FC too high to swim in? If not what would be too high?