We've had some extremely heavy rain over the last 2 days, so I was wondering do I need to shock? Is there actually a schedule for how frequently to shock (ie. weekly, bi-weekly, monthly, etc.) or is it on an as needed basis? I haven't shocked since I finished up my Baq conversion, have just been testing daily and raising FC to 4 in the evening so that I still have around 2 the next evening. Just want to make sure the excessive rain doesn't send my water out of control. Thanks!