I have a SWG but for the last couple of years I can't seem to keep the FC level up just by running the chlorinator. I was wondering how many hours people run theirs? I have 3 boys who swim almost every day for at least a couple of hours so I supplement w/bleach. But I'm going on vacation next week and will be gone 10 days. I'm scared I'll come back to a lot of algae. Right now I run my SWG for 8 hrs at 100% and can't keep the FC level up past 1 or 1.5. A neighbor told me he only runs his 3 hours a day. Is that possible to get chlorine in 3 hours a day???