Pool Cover On, How Much Do I Need to Run SWG????


Well-known member
Dec 13, 2009
Virginia Beach, VA
The leaves are starting to fall but my pool water is still 70 degrees so it's not time to close yet. I have a lot of trees and decided to go ahead and put my mesh safety cover on the pool (Merlin SmartMesh). Prior to doing that, I SLAM'd the pool and brushed down the walls, vacuumed, and removed the stairs and railings.

My question is this. Now that my pool is covered, will I need to run my SWG much at all? I turned it down to 20% (usually run it at 60%) and haven't seen a drop in the FC yet (it was 9.5 when I covered) over the last 3 days. Should I just reduce my pump run time from 10 hrs to 2 hrs and set the SWG to 100%? A little advice would be greatly appreciated.

Also, I'm going to be heading out of town for a week on Sunday, so I'd rather err on the side of not coming back to algae and having to remove the cover to SLAM and clean the pool. Thanks.


Mod Squad
TFP Expert
LifeTime Supporter
May 19, 2010
Tucson, AZ
It is trial and error. 10 hours is way more that you really need, but I am not that lowering the SWG that much is correct.
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